We found 8 dictionaries that define the word howler monkeys:

General (6 matching dictionaries)

1. howler monkeys: Merriam-Webster
2. howler monkeys: Collins English Dictionary
3. howler monkeys: Vocabulary.com
4. howler monkeys: Wiktionary
5. Howler monkeys: Wikipedia, the Free Encyclopedia
6. Howler monkeys: TheFreeDictionary.com

Computing (1 matching dictionary)

7. Howler monkeys: Encyclopedia

Medicine (1 matching dictionary)

8. Howler monkeys: Medical dictionary

(Note: See howler_monkey as well.)

Definitions from Wiktionary (howler monkey) ▸ noun:  A Central American and South American monkey of the genus Alouatta, noted for its loud call. ▸ Also see howler_monkey ▸ Words similar to howler monkeys ▸ Usage examples for howler monkeys ▸ Idioms related to howler monkeys ▸ Wikipedia articles (New!) ▸ Words that often appear near howler monkeys ▸ Rhymes of howler monkeys ▸ Invented words related to howler monkeys