Green’s Dictionary of Slang

1. (W.I.) a general negative epithet.

1954		G. Lamming Emigrants (1980) 68: That is a lot of rass-clot talk.
1967		Oz 3 3/4: The adjectival form ‘Raas cloth’ which is humorously said to be the most authentic and identifiable password among Jamaicans abroad.
1973		in Sun. Times Mag. 30 Sept. 38: ‘I’ve got rassklatt paint on my rassklatt jacket,’ he yells.
1988		S. Selvon Eldorado West One 42: This raas-claat woman rarsing up a time. . . [...] This woman, man! Tanty! She gone and open up an account with the shop [...] I tired of telling her she can’t live in Brit’n like she live in Jamaica.
2001		(con. 1981) A. Wheatle East of Acre Lane 85: Mek his blood decorate the rarse claat road.
2002		L. Kwesi Johnson ‘Street 66’ in Mi Revalueshanary Fren 10: Any policeman come yah / will get some righteous raas klaat licks, / yea man, whole heap a kicks.
2009		S.A. Chin Other Side of Paradise 260: Answer me, you little raas-claat cunt!
2017		410 ‘Foolishness’ 🎵 Chat to the gyaldem (chatty) / And you wan’ lie to your rasclart bredrin (liars).
2020		G. Krauze What They Was 114: The Birth of Tragedy is some heavy shit [and] I had to read it using a raasclart dictionary.

2. as infix.

1983

C. Knight We Shall Not Die 40: Let him say it again now in nineteen raas claat seventy, man.