adj.
1.of speech sounds produced by forcing air through a constricted passage (as `f', `s', `z', or `th' in both `thin' and `then') sibilant n.
1.a consonant characterized by a hissing sound (like s or sh)
Idiom of the Day
a penny for one's thoughts
the telling to others of what you are thinking about
"A penny for your thoughts," the girl said as she saw her boyfriend looking out the window.