The Collaborative International Dictionary of English v.0.48:

klavier \klavier\ n.
   a stringed instrument that has a keyboard, especially a
   piano, harpsichord, or clavichord; also, the keyboard of such
   an instrument. Same as clavier.

   Syn: clavier.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Klavier
    n 1: a stringed instrument that has a keyboard [syn: clavier,
         Klavier]