curtsy (n.)youdaoicibaDictYouDict[curtsy 词源字典]
1540s, "expression of respect," a variant of courtesy (q.v.). Specific meaning "a bending the knee and lowering the body as a gesture of respect" is from 1570s. Originally not exclusively feminine.[curtsy etymology, curtsy origin, 英语词源]
curtsy (v.)youdaoicibaDictYouDict
1550s, from curtsy (n.). Related: Curtsied; curtsying.