Green’s Dictionary of Slang

squat v.

1. (US, also squat the blot) to sit down, usu. to do nothing is implied.

[US]Crockett’s Yaller Flower Almanac 32: When you come to put in the scientific licks, I squat [DA].
[US]Durivage & Burnham Stray Subjects (1848) 79: A migratory race of bipeds – who float about from spot to spot, ‘squatting,’ for the nonce, wherever their fancy or interest may incline them.
[US]T.A. Dorgan in Zwilling TAD Lex. (1993) 129: All were so happy that we could squat and stick our feet under the other fellow’s chair.
[US] cited in Zwilling TAD Lex. (1993).
[UK]B. Ross Tragedy of Z 39: ‘Squat, Sherlocka,’ he said. ‘If you insist on parking here, you may as well do your heavy thinking off those beautiful little feet of yours.’.
[US]D. Burley Orig. Hbk of Harlem Jive 65: None of these fine young fryers all squatting on them fine soft tops is got a parachute.
[Aus]D. Niland Gold in the Streets (1966) 1464: ‘Squat the blot,’ Danno invited.
[UK]R.A. Norton Through Beatnik Eyeballs 57: ‘Squat,’ he say, while I searches the pad for a seat.
[US]D. Claerbaut Black Jargon in White America 81: squat v. to sit.
[US]N. McCall Them (2008) 134: I need to squat a minute and work through some things.

2. (US prison) to be executed in the electric chair; to execute.

[US]Mencken Amer. Lang. (4th edn) 581: In virtually all American prisons [...] To be electrocuted is to burn, to fry or to squat.
[US]Goldin et al. DAUL 206/1: Squat. To execute in the electric chair; to be electrocuted. ‘They’re squatting three ghees (criminals) tonight for that heist (holdup) knock-off (murder) in Harlem.’.

3. (US) to defecate.

[US] in E. Cray Erotic Muse (1992) 5: Better be sure before you squat / There’s nothing swimming in the chamberpot.
[US]S. King Different Seasons (1995) 398: I was gonna squat when we got across, anyway. I hadda take a squat, you know?

4. (US gang) to fight.

[US](con. 1990s) in J. Miller One of the Guys 174: ‘She be ready to squat with ’em [...] she just our kickin’ it partner’.

In compounds

squat house (n.)

a lavatory.

[US](con. 1920s–30s) J.O. Killens Youngblood (1956) 58: This here’s a squat house.

In phrases

squat hot (v.) [hot squat at hot seat n. (1)]

(US) to be executed in the electric chair.

[US]J.M. Cain Love’s Lovely Counterfeit 134: If that crook ever squatted hot, that would be doing something for the country [W&F].