subs. (common).A drink. For synonyms, see GO. TO DO A DRAIN, WET (q.v.), or COMMON SEWER (q.v.) = to take a friendly drink.
1835. DICKENS, Sketches by Boz, p. 106. Those two old men who came in just to have a DRAIN, finished their third quartern a few seconds ago.
1883. Daily Telegraph, 2 July, p. 5, col. 3. The drinking portion of the Americans are excessively partial to perpendicular DRAINS of cocktails and other drams with more or less preposterous names.
2. (old).Gin. [From its diuretic qualities.] For synonyms, see DRINKS.
3. (venery).The female pudendum. For synonyms, see MONOSYLLABLE.