Harpoon

Harpoon, a pointed lance, steel-headed and usually Darbed, that can be thrown or otherwise projected. To its shank a cord is generally attached. It is chiefly used in hunting large animals of the whale species. Of old, harpoons were always flung by hand, but they are now more frequently fired from a specially-constructed gun. Some carry in their heads charges which are exploded by electricity or percussion; others have spring barbs, which open out in the body of the victim, and so effectually prevent withdrawal.