Green’s Dictionary of Slang

pin v.

1. in senses of ‘pricking’.

(a) [mid-16C; 20C+] of a man, to have sexual intercourse; thus take the pin v., of a woman, to have sexual intercourse [note pin n. (1a)].

(b) [1950s] (US teen) to stab.

2. in senses of pin down.

(a) [mid-18C–mid-19C] to snatch, to steal.

(b) [late 18C–1930s] to seize, to catch, to arrest.

(c) [mid-19C] to obtain something from someone.

3. [late 19C–1930s] to pawn clothes [? SE pawn].

4. in senses of ‘keeping one’s eyes pinned’.

(a) [1920s+] (Aus.) to target someone for one’s (often amatory) attentions.

(b) [1930s+] to mark down visually, to notice.

(c) [1950s+] (US black) to stare at (aggressively).

(d) [1970s] (US black) to draw someone else’s attention to, to point out.

(e) [1970s–80s] (US) to identify.

(f) [1990s+] (US prison) of a female prisoner, to act as a lookout.

5. [1930s–40s] (Aus./US) to cause trouble for, to ‘do down’.

6. [1940s–70s] (US) to knock out [? wrestling imagery].

7. [1950s–70s] (US) to come to terms with, to work out.

8. [1950s+] (US campus) to state one’s commitment to a person of the opposite sex by giving them one’s fraternity pin.

SE in slang uses

In phrases

pin a rose (v.)

[1930s] (US short order) to put a slice of onion on a hamburger.

pin back one’s ears (v.)

see under ear n.1

pin back one’s lugholes (v.)

see under lughole n.

pin on (v.) [SE pin on, to attach]

[1930s+] to accuse, to lay the blame on someone.

pin one on (v.) (also pin a few on)

[1910s–50s] (US/Aus.) to have a drink.

pin the basket (v.)

[late 18C] to bring things to a head.

pin them

[1980s] (US campus) an instruction to stop talking.