Any keyboard instrument...most common reference is Piano. Other examples are the harpsichord and the clavichord.
In French, "clavier" is masculine.
John Clavier is 5' 11".
Jérôme Clavier was born in 1983.
Tony Clavier was born in 1940.
Étienne Clavier was born in 1762.
Étienne Clavier died in 1817.
Armando Clavier died on March 17, 2004.
Christian Clavier was born on May 6, 1952.
Christian Clavier was born on May 6, 1952.
Peter Quince at the Clavier was created in 1915.
Clavier-Übung III was created in 1739.
Larry Clavier was born on 1981-01-09.