Green’s Dictionary of Slang

snitch n.1

also snich, snitcher

1. [late 17C–mid-18C] a blow on the nose.

2. [late 17C+] (UK Und.) the nose.

3. [late 18C+] an informer [snitch v. (1)].

4. [1960s+] attrib. use of sense 3.

5. [1910s] a contemptible person.

6. [1910s] (US prison) a prisoner who curries favour.

In compounds

snitch-ass (adj.) [-ass sfx]

[1980s+] (US black) untrustworthy, tale-telling.

snitchball (n.)

[1990s+] (US prison) any game played by those inmates, among them informers, who live in protective segregation.

snitch-box (n.)

[1990s+] (US prison) a box used both for institutional correspondence and for passing on messages that accuse fellow inmates of illegal activity.

snitch game (n.) [game n. (6)]

[1990s+] (US prison) obtaining information from inmates by threatening to falsely expose them as informers.

snitch-kite (n.) [kite n. (3e)]

[1960s] (US prison) a note passed by a prisoner, giving information to the authorities.

snitch pad (n.) [weak uses of snitch v. (1) + SE pad] [1930s–40s] (US black)

1. a notebook.

2. a newspaper.

snitch rag (n.)

[1940s] a handkerchief.

snitch tag (n.)

[2000s+] (US und.) an identification as an informer.

In phrases

snite someone’s snitch (v.)

see separate entry.

turn snitch (v.) (also turn the snitch)

[late 18C–mid-19C] to become an informer.