That which howls, especially an animal such as a wolf or a howler monkey. / (historical) A person hired to howl at a funeral. / (slang) A painfully obvious mistake. / (slang) A hilarious joke.

plural of howler

A Central American and South American monkey of the genus Alouatta, noted for their loud calls.

plural of howler monkey

plural of black howler

A species of New World monkey, Alouatta caraya

plural of calamity howler

(US, slang, dated) A person who makes dismal predictions about future catastrophe; a doomsayer.