bow
v.
Old English bugan "to bend, to bow down, to bend the body in condescension," also "to turn back" (class II strong verb; past tense beag, past participle bogen), from Proto-Germanic *bugon (cognates: Dutch buigen, Middle Low German bugen, Old High German biogan, German biegen, Gothic biugan "to bend," Old Norse boginn "bent"), from *beugen, from PIE root *bheug- (3) "to bend," with derivatives referring to bent, pliable, or curved objects (cognates: Sanskrit bhujati "bends, thrusts aside;" Old High German boug, Old English beag "a ring"). The noun in this sense is first recorded 1650s. Related: Bowed; bowing. Bow out "withdraw" is from 1942.
n.
1
weapon for shooting arrows, Old English boga "archery bow, arch, rainbow," from Proto-Germanic *bugon (cognates: Old Norse bogi, Old Frisian boga, Dutch boog, German 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.
2
"front of a ship," mid-14c., from Old Norse bogr or Middle Dutch boech "bow of a ship," literally "shoulder (of an animal)," the connecting notion being "the shoulders of the ship." See bough.