Deku Nut

A Deku Nut is an item from the Nintendo 64 video game The Legend of Zelda: Ocarina of Time. In the game, the protagonist Link would find them early on and would first use them in the Great Deku Tree's dungeon, where they would be required to kill the boss within.

The Deku Nut's ability is to stun an enemy who's near Link. Once this is done, then he will be able to go closer in and attack it.

Super Smash Bros.
In Super Smash Bros. Brawl for the Wii they would also stun an enemy once thrown. FOllowing this, you'd be able to go in and attack without having to worry about the opponent attacking you back.