Definition of: howler

(hou′lər) noun
1. One who or that which howls.
2. A siren for signaling, or, when attached to a military airplane, for creating confusion or panic among the enemy.
3. A tropical American monkey having a long, prehensile tail and great vocal power: the ursine howler (Alouatta ursinus): also howling monkey.
4. Colloq. Gross exaggeration; also, an absurd mistake or blunder.