Green’s Dictionary of Slang

duke v.1

[duke n.3 (1); note WWI Aus. milit. dook ’im one, to salute]

1. [mid-19C–1920s] (also dook (it), duke it, ring the dukes) to shake hands, to welcome.

2. [1920s+] (also dook (it), duke it, ...on) to give out, to hand over; to bribe.

3. [1930s+] (also duck) to fight with the fists.

4. [1960s+] to inform.

5. [1990s+] (US black) to have sexual intercourse.

In phrases

big duke (v.)

[1920s] (Aus. und.) to overwhelm and confuse (a potential victim) with words.

duke in (v.) [handshaking in both duplicitous and sincere contexts] (US)

1. [1930s+] to introduce, to bring in to a plan or group; also as n.

2. [1950s+] to fool, to trick.

3. [1960s] to give a share.

duke it (v.)

see senses 1 and 2 above.

duke it out (v.) (also duck it out)

1. [1930s+] (US) to fight with fists.

2. [1990s+] to argue, to dispute; to challenge.

duke on (v.)

see sense 2 above.

duke out

see separate entries.