We found 12 dictionaries that define the word opa:

General (7 matching dictionaries)

1. Opa, opa: Wordnik
2. OPA: Infoplease Dictionary
3. OPA: Dictionary.com
4. OPA (song), OPA, OPA, Opa (Giorgos Alkaios song), Opa (Greek expression), Opa (Swedish band), Opa (Uruguayan band), Opa (programming language), Opa (roller coaster), Opa, Opa: Wikipedia, the Free Encyclopedia
5. Opa (m): AllWords.com Multi-Lingual Dictionary
6. OPA, Opa: Stammtisch Beau Fleuve Acronyms
7. OPA: Wiktionary

Art (1 matching dictionary)

8. Glossary of Stamp Collecting Terms (No longer online)

Computing (1 matching dictionary)

9. OPA: Encyclopedia

Miscellaneous (2 matching dictionaries)

10. OPA: Acronym Finder
11. AbbreviationZ (No longer online)

Slang (1 matching dictionary)

12. O.P.A: Urban Dictionary

Definitions from Wiktionary (OPA) ▸ noun:  Abbreviation of optionally piloted aircraft. Similar: Oma, Eis, mia, pasa, mina, piatti, Tia, tuo, dilo, biblioteca, more... Types: greek, dutch, french, german, russian, turkish, more... Phrases: Opa Locka, more... Adjectives: old, lpec, second, anti, meningococcal, optical, wartime, pre, minimum, saodat, new ▸ Words similar to opa ▸ Usage examples for opa ▸ Idioms related to opa ▸ Wikipedia articles (New!) ▸ Popular adjectives describing opa ▸ Words that often appear near opa ▸ Rhymes of opa ▸ Invented words related to opa