Noah Webster
Sibilant
SIB'ILANT, adjective [Latin sibilo, to hiss.] Hissing; making a hissing sound. S and z are called sibilant letters.
SIB'ILANT, noun A letter that is uttered with a hissing of the voice; as s and z.
SIB'ILANT, adjective [Latin sibilo, to hiss.] Hissing; making a hissing sound. S and z are called sibilant letters.
SIB'ILANT, noun A letter that is uttered with a hissing of the voice; as s and z.