Meaning of DOUBLE UP

WordNet Dictionary
	Definition:		[v]  stake winnings from one bet on a subsequent wager [v]  bend over or curl up, usually with laughter or pain; "He doubled and vomited violently" [v]  share a room or a bed designed for only one person
	Synonyms:		double, double over, parlay
	See Also:		back, bend, bet on, flex, gage, game, punt, share, stake