bow (v.) Look up bow at Dictionary.com
O.E. bugan "to bend, to bow down, to bend the body in condescension," also "to turn back" (class II strong verb; past tense beag, pp. bogen), from P.Gmc. *bugon (cf. Du. buigen, M.L.G. bugen, O.H.G. biogan, Ger. biegen, Goth. biugan "to bend," O.N. boginn "bent"), from *beugen, from PIE base *bheugh- (cf. Skt. bhujati "bends, thrusts aside"). The noun is first recorded 1650s. Bow out "withdraw" is from 1942.
bow (n1.) Look up bow at Dictionary.com
weapon for shooting arrows, O.E. boga "archery bow, arch, rainbow," from P.Gmc. *bugon (cf. O.N. bogi, O.Fris. boga, Du. boog, Ger. Bogen "bow;" see bow (v.)). The sense of "a looped knot" is from 1540s. The musician's bow (1570s) formerly was curved like the archer's. Bowlegged is attested from 1550s.
bow (n2.) Look up bow at Dictionary.com
"front of a ship," mid-14c., from O.N. bogr or M.Du. boech "bow of a ship," lit. "shoulder (of an animal)," the connecting notion being "the shoulders of the ship." See bough.