what's the meaning of the word pin?

Answer 1

If you were asking about the acronym, probably the most common use is PIN: Personal Identification Number.

Regards,
Aqualinx

Answer 2

noun

A short, straight, stiff piece of wire with a blunt head and a sharp point, used especially for fastening.
Something, such as a safety pin, that resembles such a piece of wire in shape or use.
A whit; a jot: didn't care a pin about the matter.
A slender, usually cylindrical piece of wood or metal for holding or fastening parts together, or serving as a support for suspending one thing from another, as:
A thin rod for securing the ends of fractured bones.
A peg for fixing the crown to the root of a tooth.
A cotter pin.
The part of a key stem entering a lock.
Music One of the pegs securing the strings and regulating their tension on a stringed instrument.
Nautical A belaying pin.
Nautical A thole pin.
An ornament fastened to clothing by means of a clasp.
A rolling pin.
Sports
One of the wooden clubs at which the ball is aimed in bowling.
A flagstick.
See fall
Informal The legs: spry for his age, and steady on his pins.
Electronics A lead on a device that plugs into a socket to connect the device to a system.
Computer Science
Any of the pegs on the platen of a printer, which engage holes at the edges of paper.
Any of the styluses that form a dot matrix on a printer.
Any of the small metal prongs at the end of a connector that fit into the holes in a port.
transitive verb: pinned, pin·ning, pins.
To fasten or secure with or as if with a pin or pins.
To transfix.
To place in a position of trusting dependence: He pinned his faith on an absurdity.

To hold fast; immobilize: The passenger was pinned under the wreckage of the truck.
Sports To win a fall from in wrestling.
To give (a woman) a fraternity pin in token of attachment.
adjective
Having a grain suggestive of the heads of pins. Used of leather.
phrasal verbs
pin down
To fix or establish clearly: was finally able to pin down the cause of the disease.
To force (someone) to give firm opinions or precise information: The reporter pinned the governor down on the issue of capital punishment.
pin on
To attribute (a crime) to (someone): The murder was pinned on the wrong suspect.
PIN (pÄ­n)
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abbreviation
personal identification number
fall (fôl)
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[Middle English fallen, from Old English feallan.]

verb: fell (fĕl), fall·en (fô'lən), fall·ing, falls.
intransitive verb
To drop or come down freely under the influence of gravity.
To drop oneself to a lower or less erect position: I fell back in my chair. The pilgrims fell to their knees.

To lose an upright or erect position suddenly.
To drop wounded or dead, especially in battle.
To go or come as if by falling: All grief fell from our hearts. Night fell quickly.
To come to rest; settle: The light fell on my book.
To hang down: The child's hair fell in ringlets.
To be cast down: Her eyes fell.
To assume an expression of consternation or disappointment: His face fell when he heard the report.
To undergo conquest or capture, especially as the result of an armed attack: The city fell after a long siege.

To experience defeat or ruin: After 300 years the dynasty fell.
To lose office: The disgraced prime minister fell from power.
To slope downward: The rolling hills fall gently toward the coast.

To lessen in amount or degree: The air pressure is falling.
To decline in financial value: Last year, stocks fell sharply.
To diminish in pitch or volume: My friend's voice fell to a whisper.

To give in to temptation; sin.
Theology To lose primordial innocence and happiness. Used of humanity as a result of the Fall.
To lose one's chastity.
To pass into a particular state, condition, or situation: fell silent; fall in love.
To occur at a specified time: New Year's Day falls on a Tuesday this year.
To occur at a specified place: The stress falls on the last syllable.
To come, as by chance: fell among a band of thieves; a thought that fell into his mind.

To be given by assignment or distribution: The greatest task fell to me.
To be given by right or inheritance.
To be included within the range or scope of something: The specimens fall into three categories.
To come into contact; strike: My gaze fell on a small book in the corner.
To come out; issue: Insincere compliments fell from their lips.
To apply oneself: fell to work immediately.
To be born. Used chiefly of lambs.
transitive verb
To cut down (a tree); fell.
noun
The act or an instance of falling.
A sudden drop from a relatively erect to a less erect position.
Something that has fallen: a fall of hail.

An amount that has fallen: a fall of two inches of rain.
The distance that something falls: The victim suffered a fall of three stories to the ground.
Autumn.
A waterfall.
A downward movement or slope.
Any of several pendent articles of dress, especially:
A veil hung from a woman's hat and down her back.
An ornamental cascade of lace or trimming attached to a dress, usually at the collar.
A woman's hairpiece with long, free-hanging hair.

An overthrow; a collapse: the fall of a government.
Armed capture of a place under siege: the fall of Troy.
A reduction in value, amount, or degree.
A marked, often sudden, decline in status, rank, or importance: “turned them in, set them up for prosecution; positioned them, as it were, for the fall” (Joan Didion)

A moral lapse.
A loss of chastity.
Theology The loss of humanity's original innocence and happiness resulting from Adam and Eve's eating of the forbidden fruit in the Garden of Eden.
Sports
The act of holding a wrestling opponent on his or her back so that the shoulders remain in contact with the mat for a designated period, usually one or two seconds, thereby winning the match. Also called pin
Any of various wrestling maneuvers resulting in such an act.
Nautical
A break or rise in the level of a deck.
falls. The apparatus used to hoist and transfer cargo or lifeboats.
The end of a cable, rope, or chain that is pulled by the power source in hoisting.

The birth of an animal, especially a lamb.
All the animals born at one birth; a litter.
A family of woodcock in flight. See synonyms at flock1
Botany The outer series of perianth in the irises and related plants.
adjective
Of, having to do with, occurring in, or appropriate to the season of fall: fall fashion; fall harvests.
Grown during the season of fall: fall crops.
phrasal verbs
fall apart
To break down; collapse: The rickety chair fell apart.
To suffer a nervous breakdown: He fell apart after years as a POW.
fall away
To withdraw one's friendship and support.
To become gradually diminished in size.
To drift off an established course.
To lose weight.
fall back
To give ground; retreat.
To recede: The waves fell back.
fall behind
To fail to keep up a pace; lag behind.
To be financially in arrears.
fall down
To fail to meet expectations; lag in performance: fell down on the job.
fall for
To feel love for; be in love with.
To be deceived or swindled by: fell for the con artist's scheme and lost $200,000.
fall in
To take one's place in a military formation.
To sink inward; cave in: The roof of the old barn fell in.
fall off
To become less; decrease: Stock prices have fallen off. The number of staff meetings fell off after a few months.
To lose weight: Toward the end of the dry season, the cattle fall off rapidly.
Nautical To change course to leeward.
fall on
To attack suddenly and viciously: Snipers and irregulars fell on the hapless patrol.
To meet with; encounter: a stockbroker who fell on hard times.
fall out
To leave a barracks, for example, in order to take one's place in a military formation. To leave a military formation.
To quarrel: The siblings fell out over their inheritance.
To happen; occur.
To be readily explainable; follow logically or naturally: These facts fall out nicely from the new theory.
fall through
To fail; miscarry: Our plans fell through at the last minute.
fall to
To begin an activity energetically: “The press fell to with a will” (Russell Baker)
idioms
fall back on
To rely on: fall back on old friends in time of need. To resort to: I had to fall back on my savings when I was unemployed.
fall between (the) two stools
To fail because of an inability to reconcile or choose between two courses of action.
fall flat
To fail miserably when attempting to achieve a result. To have no effect: The jokes fell flat.
fall foul
Nautical To collide. Used of vessels. To clash: fell foul of the law.
fall from grace
To experience a major reduction in status or prestige.
fall into line
To adhere to established rules or predetermined courses of action.
fall in with
To agree with or be in harmony with: Their views fall in with ours. To associate or begin to associate with: fell in with the wrong crowd.
fall on deaf ears
To go unheeded; be ignored completely: “Moscow's own familiar charges . . . will also fall on deaf ears” (Foreign Affairs)
fall over backward
To overexert oneself to do or accomplish something: We fell over backward to complete the project on time.
fall over (oneself)
To display inordinate, typically effusive, enthusiasm: fell over themselves to impress the general's wife.
fall prey to
To be put into such a vulnerable position as to be at risk of harm, destruction, or invasion: a person who fell prey to swindlers; did not want the country to fall prey to terrorists.
fall short
To fail to attain a specified amount, level, or degree: an athlete whose skill fell far short of expectations. To prove inadequate: Food supplies fell short.
fall through the cracks
To pass unnoticed, neglected, or unchecked: “In the past, many learning disabled children fell through the cracks” (Judith Harkness Richardson)