hacky sack

plural hacky sacks · alternative hackysack · alternative hackeysack · alternative hacky-sack · alternative Hacky-Sack

1. uncountablegamesA game or activity in which one or a group of players try to keep a footbag off the ground using only their feet.
2. countableThe footbag used for such a game.

   1 more example

   At the food court, I bought a turkey sandwich and another coffee. As I ate, an entourage caught my eye: four Buddhist monks, camped at the periphery of the food court seats, about thirty feet away. Shaved heads, maroon and pumpkin-colored robes. Each was smiling, even the one who slept. You'd think monks would be wearing sandals, wouldn't you? But these guys were wearing what I wear: Nike sneakers, Timberland boots. Two were horsing around with a Hacky Sack. Another was chatting quietly with a black woman in a Chicago Bulls sweatshirt.

   2008, Wally Lamb, The Hour I First Believed, Ch.3, at p.74