- Crack-loo Crack"-loo`, n. Also Crackaloo Crack"a*loo` . A kind of gambling game consisting in pitching coins to or towards the ceiling of a room so that they shall fall as near as possible to a certain crack in the floor. [Gamblers' Cant, U. S.] [Webster 1913 Suppl.]
The Collaborative International Dictionary of English. 2000.