We found 13 dictionaries that define the word obrien:

General (10 matching dictionaries)

1. O'Brien, O'Brien: Collins English Dictionary
2. O'Brien: Vocabulary.com
3. O'Brien, OBrien, OBrien, O'brien, Obrien, o'brien, obrien: Wordnik
4. O'Brien: Wiktionary
5. o'brien, obrien: Dictionary.com
6. O'Brien, O'Brien (Nineteen Eighty-Four), O'Brien (Star Trek), O'Brien (TV series), O'Brien (book character), O'Brien (disambiguation), O'Brien (surname): Wikipedia, the Free Encyclopedia
7. O'brien, Obrien: Rhymezone
8. obrien: FreeDictionary.org
9. o'brien: Mnemonic Dictionary
10. O'Brien: TheFreeDictionary.com

Computing (1 matching dictionary)

11. O'Brien: Encyclopedia

Slang (1 matching dictionary)

12. O'Brien: Urban Dictionary

Tech (1 matching dictionary)

13. O'Brien: Glossary of Insulator Terms

Definitions from WordNet (Obrien) ▸ name:  A surname (common: 1 in 2564 families; popularity rank in the U.S.: #281) Phrases: edna obrien, obrien edna, obrien flann, more... ▸ Words similar to obrien ▸ Usage examples for obrien ▸ Idioms related to obrien ▸ Wikipedia articles (New!) ▸ Words that often appear near obrien ▸ Rhymes of obrien ▸ Invented words related to obrien