clavieryoudaoicibaDictYouDict[clavier 词源字典]
clavier: [18] The Latin word for ‘key’ was clāvis (it was related to claudere ‘close’). Its application to the keys of a musical instrument has contributed two words to English: clavier, which came via French or German from an unrecorded Latin *clāviārius ‘key-bearer’; and clavichord [15], from medieval Latin clāvichordium, a compound of Latin clāvis and Latin chorda, source of English chord.

Its diminutive form clāvicula was applied metaphorically to the collar-bone (hence English clavicle [17]) on account of the bone’s resemblance to a small key. And in Latin, a room that could be locked ‘with a key’ was a conclāve – whence (via Old French) English conclave [14]. Also related to clāvis is cloy.
=> clavicle, close, cloy, conclave[clavier etymology, clavier origin, 英语词源]
clavier (n.)youdaoicibaDictYouDict
1708, "keyboard," from French clavier, originally "a key-bearer," from Latin clavis "key" (see slot (n.2)). The French word also is the source of German Klavier, Dutch klavier, Danish klaver, etc. The German word is the direct source of the name of the musical instrument, a sense attested from 1845 in English.