Trident

Part of speech: noun (n.)

1. A kind of scepter or spear with three prongs, -- the common attribute of Neptune.

2. A three-pronged spear or goad, used for urging horses; also, the weapon used by one class of gladiators.

3. A three-pronged fish spear.

4. A curve of third order, having three infinite branches in the direction and a fourth infinite branch in the opposite direction. Trident bat (Zoöl.), an Asiatic rhinolophid bat (Triænops Persicus), having the nose membrane in the shape of a trident.

Part of speech: adjective (a.)

Having three teeth or prongs; tridentate.