what dukes mean?

Answer 1

? Look it up maybe? Dictionary isnt a hard word to look up. It's not hard from there! But if you are too lazy here....

DUKE
NOUN:

1. A nobleman with the highest hereditary rank, especially a man of the highest grade of the peerage in Great Britain.
2. A sovereign prince who rules an independent duchy in some European countries.
3. Abbr. D. or Du. Used as the title for such a nobleman.
4. Slang A fist. Often used in the plural: Put up your dukes!
5. Botany A type of cherry intermediate between a sweet and a sour cherry.
American Heritage Dictionary.

Answer 2

Fists.