from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Basketball A play in which a pass is lobbed above the basket and a player jumps up and attempts to catch the ball and score before returning to the floor.
- n. Basketball The pass made in such a play.
- interj. Used to signal the start of a strenuous activity, such as lifting.
French allez-oop, cry of circus acrobat about to leap, from allez, pl. imperative of aller, to go, from Old French aler, to walk; see alley1.(American Heritage® Dictionary of the English Language, Fourth Edition)