To Rap (Grose 1811 Dictionary)

To Rap

To take a false oath; also to curse. He rapped out a volley; i.e. he swore a whole volley of oaths. To rap, means also to exchange or barter: a rap is likewise an Irish halfpenny. Rap on the knuckles; a reprimand.

Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.

Rantum Scantum * Rapparees

Nearby

Nathan Bailey's 1736 Dictionary of canting and thieving slang

John S. Farmer's collection of canting songs and slang rhymes

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About

Francis Grose was independently wealthy, having inherited money from his father, a jeweller. Finding himself overspending, he published a number of books; his Provincial Glossary seems to have been the starting-point for the Vulgar Tongue reproduced here.