Green’s Dictionary of Slang

crack n.3

1. [late 17C+] (also love crack) the vagina; thus crack-shop, a brothel.

2. [late 17C+] (also town-crack) a prostitute; a ‘fallen woman’; modern use is a woman, but usu. in a derog. sense.

3. [late 19C] (UK, London) a narrow passage of houses.

4. [1940s+] (also bumcrack, butt crack) the cleft between the buttocks.

5. [1970s+] (gay) the anus.

6. [1970s+] in fig. use of sense 4, i.e. a generic term for one’s body.

In derivatives

crackish (adj.)

[late 17C–19C; 2000s+] of a woman, wanton, promiscuous.

In compounds

crack-hunter (n.) (also crack-haunter)

[late 19C] the penis.

crack salesman (n.)

1. [1940s] a pimp.

2. [1960s+] a gay male prostitute.

crack snaker (n.)

[1990s+] (US) a derog. term for a lesbian.

In phrases

get a shot of crack (v.)

[20C+] (US) to have sexual intercourse.

in someone’s crack

[1980s+] (US campus) inquisitive, over-involved.

not on your crack

[1920s] (US black/W.I.) in no way at all.

put (someone) in a crack (v.)

(US) to cause (someone) problems.