trident

A long, three-pronged fork or weapon, especially a three-pronged spear used for fishing.

The three-pronged spear carried by Neptune or Poseidon.

Having three teeth, prongs, or similar protrusions.

Any instrument of the form of a fork with three prongs; specifically, a three-pronged fish-spear.

A spear with three prongs, usually barb-pointed, forming a characteristic attribute of Poseidon (Neptune), the sea-god. See also cut under Poseidon.

Hence, marine sovereignty; rule over the ocean or sea.

In Roman antiquity, a three-pronged spear used by the retiarius in gladiatorial combats.

In geometry, a crunodal plane cubic curve having the line at infinity for one of the tangents at the node, It was discovered and named by Descartes.

Having three teeth or prongs; tridentate.

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