warhead noun3 •The part of a missile, projectile, torpedo, rocket, or other munition which contains either the nuclear or thermonuclear system, high explosive system, chemical or biological agents, or inert materials intended to inflict damage."Multi Bottle Rocket". Possibly the strongest weapon around, it does a lot of damage due to its massive warhead. — 1995 •(slang) A cigarette where the tobacco is mixed with some other drug. •(slang) The glans penis. formswarheads