from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A long, three-pronged fork or weapon, especially a three-pronged spear used for fishing.
- n. Greek & Roman Mythology The three-pronged spear carried by Neptune or Poseidon.
- adj. Having three teeth, prongs, or similar protrusions.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A three-pronged spear somewhat resembling a pitchfork.
from the GNU version of the Collaborative International Dictionary of English
- n. A kind of scepter or spear with three prongs, -- the common attribute of Neptune.
- n. A three-pronged spear or goad, used for urging horses; also, the weapon used by one class of gladiators.
- n. A three-pronged fish spear.
- n. A curve of third order, having three infinite branches in one direction and a fourth infinite branch in the opposite direction.
- adj. Having three teeth or prongs; tridentate.
from The Century Dictionary and Cyclopedia
- n. Any instrument of the form of a fork with three prongs; specifically, a three-pronged fish-spear.
- n. A spear with three prongs, usually barb-pointed, forming a characteristic attribute of Poseidon (Neptune), the sea-god. See also cut under Poseidon.
- n. Hence, marine sovereignty; rule over the ocean or sea.
- n. In Roman antiquity, a three-pronged spear used by the retiarius in gladiatorial combats.
- n. 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.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a spear with three prongs
Middle English, from Old French, from Latin tridēns, trident- : tri-, tri- + dēns, tooth.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin tridēns, from trēs ("three") + dēns ("tooth"). (Wiktionary)