Trident

n. [Lat. tridens, tridentis, from tri, and dens, tooth; Fr. trident, Sp. & It. tridente.]

1. (Anc. Myth.) A kind of scepter or spear with three prongs, the common attribute of Neptune, the deity of the ocean.
2. (Rom. Antiq.) A three-pronged spear used in the contests of gladiators by the retiarius. W. Smith.
3. A three-pronged fish-spear.