bow (n.1)youdaoicibaDictYouDict[bow 词源字典]
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.[bow etymology, bow origin, 英语词源]
prevarication (n.)youdaoicibaDictYouDict
late 14c., "divergence from a right course, transgression," from Old French prevaricacion "breaking of God's laws, disobedience (to the Faith)" (12c., Modern French prévarication) and directly from Latin praevaricationem (nominative praevaricatio) "duplicity, collusion, a stepping out of line (of duty or behavior)," noun of action from past participle stem of praevaricari "to make a sham accusation, deviate," literally "walk crookedly," in Church Latin, "to transgress," from prae "before" (see pre-) + varicare "to straddle," from varicus "straddling," from varus "bowlegged, knock-kneed" (see varus). Meaning "evasion, quibbling" is attested from 1650s.