- any musical instrument having a keyboard, especially a stringed keyboard instrument, as a harpsichord, clavichord, or piano.
- any keyboard instrument
- the keyboard itself
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.