We found 24 dictionaries that define the word ACLU:

General (16 matching dictionaries)

1. ACLU: Merriam-Webster
2. ACLU: Oxford Learner's Dictionaries
3. ACLU: American Heritage Dictionary of the English Language
4. ACLU: Collins English Dictionary
5. Aclu, aclu: Wordnik
6. ACLU: Wiktionary
7. ACLU: Webster's New World College Dictionary, 4th Ed.
8. ACLU: The Wordsmyth English Dictionary-Thesaurus
9. ACLU: Infoplease Dictionary
10. ACLU, a.c.l.u: Dictionary.com
11. ACLU, Aclu, The ACLU: Wikipedia, the Free Encyclopedia
12. ACLU: Stammtisch Beau Fleuve Acronyms
13. ACLU: TheFreeDictionary.com
14. aclu: Longman Dictionary of Contemporary English
15. ACLU: Merriam-Webster

Business (4 matching dictionaries)

16. ACLU: Merriam-Webster Legal Dictionary
17. ACLU: Webster's New World Law Dictionary
18. Glossary of Legal Terms (No longer online)
19. ACLU: Legal dictionary

Computing (1 matching dictionary)

20. ACLU: Encyclopedia

Miscellaneous (2 matching dictionaries)

21. ACLU: Acronym Finder
22. AbbreviationZ (No longer online)

Slang (1 matching dictionary)

23. aclu: Urban Dictionary

Definitions from Wiktionary (ACLU) ▸ noun:  Initialism of American Civil Liberties Union. Similar: NAACP, Scotus, FOIA, NYPD, hsu, MPAA, NDAA, RIAA, ASPCA, Obama, more... Opposite: conservative, right-wing, traditionalist Phrases: part of aclu, more... Adjectives: national, local, liberal, anti, early ▸ Words similar to ACLU ▸ Usage examples for ACLU ▸ Idioms related to ACLU ▸ Wikipedia articles (New!) ▸ Popular adjectives describing ACLU ▸ Words that often appear near ACLU ▸ Rhymes of ACLU ▸ Invented words related to ACLU