In his armour, pot valiant: to fight in armour;
  to make use of Mrs. Philips's ware. See C—D—M.

ARK. A boat or wherry. Let us take an ark and winns, let
  us take a sculler. CANT.

ARK RUFFIANS. Rogues who, in conjunction with watermen, robbed, and sometimes murdered, on the water, by picking a quarrel with the passengers in a boat, boarding it, plundering, stripping, and throwing them overboard, &c. A species of badger. CANT.

ARRAH NOW. An unmeaning expletive, frequently used by the vulgar Irish.

ARS MUSICA. A bum fiddlle.

ARSE. To hang an arse; to hang back, to be afraid to advance. He would lend his a-e and sh-te through his ribs; a saying of any one who lends his money inconsiderately. He would lose his a-e if it was loose; said of a careless person. A-e about; turn round.

ARSY YARSEY. To fall arsy varsey, i.e. head over heels.

ARTHUR, KING ARTHUR, A game used at sea, when near the line, or in a hot latitude. It is performed thus: A man who is to represent king Arthur, ridiculously dressed, having a large wig made out of oakum, or some old swabs, is seated on the side, or over a large vessel of water. Every person in his turn is to be ceremoniously introduced to him, and to pour a bucket of water over him, crying, hail, king Arthur! if during this ceremony the person introduced laughs or smiles (to which his majesty endeavours to excite him, by all sorts of ridiculous gesticulations), he changes place with, and then becomes, king Arthur, till relieved by some brother tar, who has as little command over his muscles as himself.

ARTICLES. Breeches; coat, waistcoat, and articles.

ARTICLE. A wench. A prime article. A handsome girl.
  She's a prime article (WHIP SLANG), she's a devilish good
  piece, a hell of a GOER.

ASK, or AX MY A-E. A common reply to any question;
  still deemed wit at sea, and formerly at court, under the
  denomination of selling bargains. See BARGAIN.

ASSIG. An assignation.

ATHANASIAN WENCH, or QUICUNQUE VULT. A forward girl, ready to oblige every man that shall ask her.

AUNT. Mine aunt; a bawd or procuress: a title of eminence for the senior dells, who serve for instructresses, midwives, &c. for the dells. CANT. See DELLS.

AVOIR DU POIS LAY. Stealing brass weights off the counters of shops.