1. A keyboard.
2. A stringed keyboard instrument, such as a harpsichord.

[German Klavier, from French clavier, from Old French, key-bearer, from Latin clāvis, key.]

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.