We found 10 dictionaries that define the word GBR:

General (5 matching dictionaries)

1. GBr, Gbr: Wordnik
2. GBR: Dictionary.com
3. GBR (disambiguation), GBR (subpixels), GBR: Wikipedia, the Free Encyclopedia
4. GBR: Stammtisch Beau Fleuve Acronyms
5. GBR: Wiktionary

Miscellaneous (2 matching dictionaries)

6. GBR: Acronym Finder
7. AbbreviationZ (No longer online)

Science (1 matching dictionary)

8. GBR: A Dictionary of Quaternary Acronyms and Abbreviations

Slang (1 matching dictionary)

9. GBR: Urban Dictionary

Tech (1 matching dictionary)

10. DOD Dictionary of Military Terms: Joint Acronyms and Abbreviations (No longer online)

Definitions from Wiktionary (GBR) ▸ noun:  (telecommunications) Initialism of guaranteed bitrate. ▸ noun:  Initialism of Great British Railways. Similar: reef, northern, southern, central, abutment, Adriatic, aisle, Americas, annexe, Antarctic, more... Phrases: gbr t, more... ▸ Words similar to GBR ▸ Usage examples for GBR ▸ Idioms related to GBR ▸ Wikipedia articles (New!) ▸ Popular adjectives describing GBR ▸ Words that often appear near GBR ▸ Rhymes of GBR ▸ Invented words related to GBR