adj. 1 consisting of two parts or things; twofold. 2 twice as much or many (double thickness). 3 having twice the usual size, quantity, strength, etc. (double bed). 4 a being double in part. b (of a flower) with two or more circles of petals. 5 ambiguous, deceitful (double meaning; a double life). adv. 1 at or to twice the amount etc. (counts double). 2 two together (sleep double). n. 1 double quantity (of spirits etc.) or thing; twice as much or many. 2 counterpart; person who looks exactly like another. 3 (in pl.) game between two pairs of players. 4 pair of victories. 5 bet in which winnings and stake from the first bet are transferred
