clav·i·chord 
(klăvĭ-kôrd′)
(klăvĭ-kôrd′)n.
An early keyboard instrument with a soft sound produced by small brass wedges striking horizontal strings.
[Middle English clavicord, from Medieval Latin clāvichordium : Latin clāvis, key + Latin chorda, string; see CORD.]
clavi·chord′ist n.