clar·i·net 
(klăr′ə-nĕt)
(klăr′ə-nĕt)n.
A woodwind instrument having a straight cylindrical tube with a flaring bell and a single-reed mouthpiece, played by means of finger holes and keys.
[French clarinette, feminine diminutive of Old French clarin, clarion, clarion; see CLARION, or of Provençal clarin, oboe (from Old Provençal clar, clear, from Latin clārus; see CLEAR).]
clar′i·netist, clar′i·nettist n.
clarinet