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English definition of “gauge”

gauge

noun [C]    /ɡeɪdʒ/
a device for measuring the amount or size of something: She used a pressure gauge to measure the air pressure in her bicycle tires . The test is simply a gauge of (= a way of judging ) how well they will do in college . A gauge is also a measure of the thickness of a wire or of the opening inside the barrel (= long part ) of a gun : a 12-gauge shotgun
(Definition of gauge noun from the Cambridge Academic Content Dictionary © Cambridge University Press)
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