<p><strong>Noun</strong></p><ul><li>A three-pronged instrument or weapon.</li><li>A three-pronged spear used by a retiarius in gladiatorial combats.</li><li>The three-pronged spear forming a characteristic attribute of the sea god Poseidon, or Neptune.</li><li>A fish spear having three prongs.</li><li>A 34-foot (10-meter) submarine-launched U.S. ballistic missile with eight to ten warheads and a range of 6,500 miles (10,459 km).</li></ul><p><strong>Adjective</strong></p><ul><li>Having three prongs or tines.</li></ul>