Twice the number, amount, size, etc. • A person who resembles and stands in for another person, often for safety purposes • A drink with two portions of alcohol. • Two shifts of work back to back. • A ghostly apparition of a living person; a doppelgänger. • A sharp turn, especially a return on one's own tracks. • A redundant item for which an identical item already exists. • A two-base hit. • A call that increases certain scoring points if the last preceding bid becomes the contract. • A strike in which the object ball is struck so as to make it rebound against the cushion to an opposite pocket. • A bet on two horses in different races in which any winnings from the first race are placed on the horse in the later race. • The narrow outermost ring on a dartboard. • A hit on this ring. • A tile that has the same value (i.e., the same number of pips) on both sides. • A double-precision floating-point number. • Two competitions, usually one league and one cup, won by the same team in a single season. • A boat for two scullers. • The feat of scoring twice in one game. • The feat of winning two events in a single meet or competition. • The achievement of 1000 runs and 100 wickets taken in a single season. • A former French coin worth one-sixth of a sou. • A copper coin worth one-eighth of a penny. • Playing the same part on two instruments, alternately. • A double feast. • Synonym of double-quick (“fast marching pace”). • A secondary instrument with which a musician is skilled. • A double-cross or betrayal. • A double agent. • Someone who identifies with the same kintype. • Someone who yumeships with the same character as another person.