A kind of scepter or spear with three prongs, -- the common attribute of Neptune.
A three-pronged spear or goad, used for urging horses; also, the weapon used by one class of gladiators.
A three-pronged fish spear.
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.
Having three teeth or prongs; tridentate.
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