We found 23 dictionaries that define the word loony bin:

General (18 matching dictionaries)

1. loony bin: Longman Dictionary of Contemporary English
2. loony bin: Merriam-Webster
3. loony bin: Oxford Learner's Dictionaries
4. loony bin: American Heritage Dictionary of the English Language
5. loony bin: Collins English Dictionary
6. loony bin: Vocabulary.com
7. loony bin: Wordnik
8. loony bin: Cambridge Advanced Learner's Dictionary
9. loony bin: Wiktionary
10. loony bin: The Wordsmyth English Dictionary-Thesaurus
11. loony bin: Infoplease Dictionary
12. loony bin: Dictionary.com
13. Loony bin: Rhymezone
14. loony bin: FreeDictionary.org
15. loony bin: Mnemonic Dictionary
16. loony bin: TheFreeDictionary.com

Business (1 matching dictionary)

17. Loony-bin, loony bin: Legal dictionary

Computing (1 matching dictionary)

18. loony bin: Encyclopedia

Medicine (1 matching dictionary)

19. Loony-bin, loony bin: Medical dictionary

Slang (2 matching dictionaries)

20. loony-bin: English slang and colloquialisms used in the United Kingdom
21. loony bin: Urban Dictionary

(Note: See loony_bins as well.)

Definitions from Wiktionary (loony bin) ▸ noun:  (slang, derogatory) A lunatic asylum. Similar: bedlam, funny farm, sanatorium, madhouse, nuthouse, booby hatch, crazy house, funny house, looney bin, loony, more... Opposite: sanatorium Adjectives: cray, loco, loony, insano, hatstand, crackpot, crazy, kooky, looney tunes, eccentric, whacko ▸ Words similar to loony bin ▸ Usage examples for loony bin ▸ Idioms related to loony bin ▸ Wikipedia articles (New!) ▸ Words that often appear near loony bin ▸ Rhymes of loony bin ▸ Invented words related to loony bin