Trident

·noun A three-pronged fish spear.

II. Trident ·adj Having three teeth or prongs; tridentate.

III. Trident ·noun A kind of scepter or spear with three prongs, — the common attribute of Neptune.

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

V. Trident ·noun A curve of third order, having three infinite branches in one direction and a fourth infinite branch in the opposite direction.