Green’s Dictionary of Slang

cull n.1

[? cully n.1 ; ? SE cullion, a contemptible person; ? fig. use of culls n.; Bee (1823) suggests that the cull was orig. ‘a prostitute’s favourite’ before losing status to become merely ‘a customer of any sort who pays for “favors secret, sweet, and precious”’]

1. [mid-17C–mid-19C] a prostitute’s customer.

2. [mid-17C–1930s] a dupe, a silly fellow, a simpleton, a fool.

3. [18C] a constable.

4. [18C–1930s] a man, a fellow, a chap.

5. [mid–late 19C] a friend, usu. as term of address.

In derivatives

cullish (adj.)

[early 19C] deceitful, cheating.

cullishly (adv.)

[early 19C] foolishly.

In compounds

cull of the bing (n.) [bingo n.1 ]

[mid-19C] (US) a tavern-keeper.

cull of the ken (n.) [ken n.1 (1)]

[mid-18C] (UK Und.) the master of the house.