Definitions
1.nounThe male ruler of a duchy (female equivalent: duchess).
2.nounThe sovereign of a small state.
3.nounA high title of nobility; the male holder of a dukedom.
4.nounA grand duke.
5.nounAny of various nymphalid butterflies of the Asian genera Bassarona and Dophla.
6.noun(usually in the plural) A fist."Put up your dukes!"
7.verbTo hit or beat with the fists.
8.verbTo give cash to; to give a tip to."I duked him twenty dollars."