Sibilant
Pronunciation : Sib"i*lant
Part of Speech : a.
Etymology : [L. sibilans, -antis, p. pr. of sibilare to hiss: cf. F. sibilant.]
Definition : Defn: Making a hissing sound; uttered with a hissing sound; hissing; as, s, z, sh, and zh, are sibilant elementary sounds. -- n.
Defn: A sibiliant letter.
Source : Webster's Unabridged Dictionary, 1913