GB
WordNet
noun
(1) A monarchy in northwestern Europe occupying most of the British Isles; divided into England and Scotland and Wales and Northern Ireland
(2) A unit of information equal to one billion (1,073,741,824) bytes or 1024 megabytes
(3) A unit of magnetomotive force equal to 0.7958 ampere-turns
(4) A highly toxic chemical nerve agent that inhibits the activity of cholinesterase
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