DICT.TW Dictionary Taiwan

 Shrill a. [Compar. Shriller superl. Shrillest.]  Acute; sharp; piercing; having or emitting a sharp, piercing tone or sound; -- said of a sound, or of that which produces a sound.
 Hear the shrill whistle which doth order give
 To sounds confused.   --Shak.
    Let winds be shrill, let waves roll high.   --Byron.