Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “GB”


noun     /ˌdʒiːˈbiː/
abbreviation for Great Britain Country namesCountry and nationContinents and regions of the world specialized (also Gb) computing written abbreviation for gigabyte
(Definition of GB noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of GB

Definitions of “GB” in other dictionaries

Word of the Day

grand prix

one of a series of important international races for very fast and powerful cars

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More