Meaning of alley-oop

al•ley-oop

Pronunciation: (al'ē p'), [key]
— interj.
  1. (used as a shout of encouragement, exhortation, or the like, esp. when coordinating efforts to lift a heavy object.)
—n.
  1. a quick-score play in which a high, arching pass is made to a teammate close to the basket, who leaps to catch the ball and in midair drops or stuffs it through the basket.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.