alley-oop

used as a word of encouragement to somebody who is getting up, being helped up, or lifting something

in basketball, a play in which a player jumps up to receive a pass over the basket and immediately puts the ball into the net from above

in basketball, a pass aimed to allow a player to jump up to receive it over the basket

in snowboarding and surfing, a rotation of 180º or more made in the air while moving in an uphill or upward direction

in skateboarding, a trick performed in the opposite direction to which the skateboarder is moving