What is the word for a word that has two meanings?

Question

i.e., "bank":

He sat on the river ___ to fish.
I must go to the ___ to get some cash.

Answer 1

homograph

http://www.sil.org/linguistics/GlossaryOfLinguisticTerms/WhatIsAHomonym.htm

Answer 2

Homonym

"There is a strange puzzle in the English language — we have many words which have more than one meaning. The meanings are sometimes totally unrelated — how on earth can one word mean two different things? For instance, how can lead be a verb meaning to go first and also the name of a heavy metal? How can pound have four meanings?

The answer lies in the fact that English is an invaded language — it has been influenced by many other languages over its long history. Words which now look the same might have come from entirely different sources. Some words might have started from the same source but gradually acquired different shades of meaning between, say, the 13th and 16th centuries.

Another factor is involved. As centuries go by, and different peoples adopt words, the way they pronounce them might shift and change in emphasis. An example of this is explained under bear. Here are the stories behind 50 of those apparently confusing words which make English such a rich language. There is a HUGE amount of information in this section, to enrich your brain!"

Answer 3

polysemous

Answer 4

synonymous