Harpoon

n.	1.	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, flat, triangular head, sharpened at both edges, and is thrown by hand, or discharged from a gun. Harpoon fork a kind of hayfork, consisting of a bar with hinged barbs at one end and a loop for a rope at the other end, used for lifting hay from the load by horse power. Harpoon gun a gun used in the whale fishery for shooting the harpoon into a whale.
v. t.	1.	To strike, catch, or kill with a harpoon. [imp. & p. p. Harpooned (-pŌnd"); p. pr. & vb. n. Harpooning.]

Noun	1.	harpoon - a spear with a shaft and barbed point for throwing; used for catching large fish or whales; a strong line is attached to it
Verb	1.	harpoon - spear with a harpoon; "harpoon whales"

bag, catch, enmesh, ensnare, entangle, entrap, foul, hook, land, lasso, mesh, nail, net, noose, rope, sack, snag, snare, sniggle, spear, take, tangle, tangle up with, trap