keepy-uppynoun
also keepie-uppie uk/ˌkiː.piˈʌp.i//ˌkiː.piˈʌp.i/UK informal[ U ] a game of bouncing a ball off any part of your body except your hand or arm, as many times as you can without the ball hitting the ground:
Let's play keepy-uppy.
[ C ] plural keepy-uppies or keepie-uppies a movement in which you bounce a ball off any part of your body except your hand or arm, in order to prevent it from hitting the ground:
He was practising his keepie-uppies.