mighty, adj. — Green’s Dictionary of Slang

mighty adj.

mighty dome (n.)

(US black) the US Congress building or any similar large, institutional edifice.

1944

‘Jiver’s Bible’ in D. Burley Orig. Hbk of Harlem Jive.

mighty mezz (n.)

mighty mouth (n.) (camp gay)

1. a fellator.

1972

2. a gossip or one who boasts.

1972

mighty quinn (n.) [the Bob Dylan song ‘The Mighty Quinn’ (1966), esp. the line ‘You ain’t seen nothin’ like the Mighty Quinn’]

(drugs) LSD.

1975		Hardy & Cull Drug Lang. and Lore.
1977		S.N. Pradhan Drug Abuse.
2001		ONDCP Street Terms 15: Mighty Quinn — LSD.

mighty-come-a-tooting (also mighty come-a-right, mighty-come-a-shouting, mighty-come-a-whistling, mighty shouting, mighty whistling)

(US) quite right; usu. preceded by you’re...

1905		DN 3.88: Mighty (come-a)shoutin’, mighty whistling. . . Right. ‘You’re mighty (come a-)shoutin’. ‘You’re mighty whistlin’.’ [DARE].
1941		J.H. Street In Father’s House 171: ‘Did you see any good trucks?’ ‘You mighty come a’right. I picked out one and made a down payment.’ [DARE].
1970		in Thompson Collection.

mighty Joe Young (n.) [the film Mighty Joe Young (1949)] (drugs)

1. an extremely heavy narcotics addiction.

1969		R.R. Lingeman Drugs from A to Z (1970).
1972		Smith & Gay Heroin in Perspective.
1979		J. Homer Jargon.

2. a depressant.

2001

ONDCP Street Terms 15: Mighty Joe Young — Depressants.