"weapon," c.1511, from M.Fr. pique "a spear, pikeman," from piquer "to pick, prick, pierce," from O.Fr. pic "sharp point or spike," perhaps ult. from a Gmc. or Celtic source. Alternative explanation traces O.Fr. word to L. picus "woodpecker." Also developed from O.E. pic "pointed object, pickaxe." Pike,
pick, and pitch were formerly used indifferently in Eng. Pike position in diving, gymnastics, etc., attested from 1928, on same notion as jack-knife.
"voracious freshwater fish," early 14c., probably short for pike-fish, a special use of pike
(2) in reference to the fish's long, pointed jaw (cf. Fr. brochet "pike" (fish), from broche "a roasting spit").