We found 16 dictionaries that define the word reams:

General (12 matching dictionaries)

1. reams: Longman Dictionary of Contemporary English
2. reams: Merriam-Webster
3. reams: Collins English Dictionary
4. reams: Vocabulary.com
5. Ream's, Reams, reams: Wordnik
6. reams: Cambridge Advanced Learner's Dictionary
7. reams: Wiktionary
8. reams: Dictionary.com
9. reams: Cambridge Essential American English Dictionary
10. Reams (surname): Wikipedia, the Free Encyclopedia
11. Reams: Rhymezone
12. reams: TheFreeDictionary.com

Computing (1 matching dictionary)

13. reams: Encyclopedia

Miscellaneous (2 matching dictionaries)

14. REAMS: Acronym Finder
15. AbbreviationZ (No longer online)

Slang (1 matching dictionary)

16. Reams, Reams: Urban Dictionary

(Note: See ream as well.)

Definitions from WordNet (Reams) ▸ name:  A surname (rare: 1 in 50000 families; popularity rank in the U.S.: #5938) Adjectives: many, whole, endless, few, several, worth, typed, vast, countless, huge, printed ▸ Words similar to reams ▸ Usage examples for reams ▸ Idioms related to reams ▸ Wikipedia articles (New!) ▸ Words that often appear near reams ▸ Rhymes of reams ▸ Invented words related to reams