adj.
1.of speech sounds produced by forcing air through a constricted passage (as `f', `s', `z', or `th' in both `thin' and `then') fricative n.
1.a continuant consonant produced by breath moving against a narrowing of the vocal tract
Idiom of the Day
go off on a tangent
to suddenly change one's line of thought or course of action
The speaker suddenly went off on a tangent and began to speak about something totally different.