A three-pronged spear, often associated with mythology (e.g., Poseidon) or heraldry. The Japanese term is a direct translation of the English 'trident' and is less common than the loanword トライデント.
See also: トライデント
In Greek mythology, Poseidon uses a trident as his weapon.
Compound of 三叉 (さんさ, 'three-pronged') + 戟 (げき, 'halberd' or 'polearm'). The exact historical derivation is uncertain; the spelling is conventionally associated with the trident weapon.