Noah Webster's Dictionary 1. (n.) A spear or javelin used to strike and kill large fish, as whales; a harping iron. It consists of a long shank, with a broad, fiat, triangular head, sharpened at both edges, and is thrown by hand, or discharged from a gun. 2. (v. t.) To strike, catch, or kill with a harpoon.

Multi-Version Concordance Harpoon (1 Occurrence) Job 41:26 If any reach him with a sword, it cannot hold; neither spear, nor dart, nor harpoon. (DBY)