The Collaborative International Dictionary of English v.0.48:

Clarichord \Clar"i*chord\, n. [F. clatocorde, fr.L. clarus clear
   + chorda string. See Chord.]
   A musical instrument, formerly in use, in form of a spinet;
   -- called also manichord and clavichord.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Clavichord \Clav"i*chord\, n. [F. clavicorde, fr. L. clavis key
   + chorda string.] (Mus.)
   A keyed stringed instrument, now superseded by the
   pianoforte. See Clarichord.
   [1913 Webster]

WordNet (r) 3.0 (2006):

clavichord
    n 1: an early stringed instrument like a piano but with more
         delicate sound

Moby Thesaurus II by Grady Ward, 1.0:

38 Moby Thesaurus words for "clavichord":
   Klavier, Steinway, baby grand, cembalo, clarichord, clavicembalo,
   clavicittern, clavicymbal, clavicytherium, clavier, concert grand,
   cottage piano, couched harp, dulcimer harpsichord, grand,
   grand piano, hammer dulcimer, harmonichord, harpsichord, manichord,
   manichordon, melodion, melopiano, monochord, pair of virginals,
   parlor grand, pianette, pianino, piano, piano-violin, pianoforte,
   sostinente pianoforte, spinet, square piano, upright,
   upright piano, violin piano, virginal