al·ley-oop 
(ăl′ē-p)
(ăl′ē-p)n.
Basketball
Basketball
1. 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.
2. 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.]