Definition of 'gauge'

Noun

1. a measuring instrument for measuring and indicating a quantity such as the thickness of wire or the amount of rain etc.
      Synonyms: gage
2. accepted or approved instance or example of a quantity or quality against which others are judged or measured or compared
      Synonyms: standard of measurement
3. the distance between the rails of a railway or between the wheels of a train
4. the thickness of wire
5. diameter of a tube or gun barrel
      Synonyms: bore caliber calibre

Verb

1. judge tentatively or form an estimate of (quantities or time); "I estimate this chicken to weigh three pounds"
      Synonyms: estimate approximate guess judge
2. rub to a uniform size; "gauge bricks"
3. determine the capacity, volume, or contents of by measurement and calculation; "gauge the wine barrels"
4. measure precisely and against a standard; "the wire is gauged"
5. adapt to a specified measurement; "gauge the instruments"
6. mix in specific proportions; "gauge plaster"

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