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English definition of “calibre”

calibre

noun uk UK (US caliber)   /ˈkæl.ɪ.bər/ us    /-bɚ/

calibre noun (QUALITY)

[U] the quality of someone or something, especially someone's ability: If teaching paid more it might attract people of (a) higher calibre. The competition entries were of such (a) high calibre that judging them was very difficult.Quality and standard

calibre noun (MEASUREMENT)

[C or U] the width of the inside of a pipe, especially of the long cylinder-shaped part of a gun, or the width of a bulletHandguns and riflesAiming and aimHand weaponsMeasurements in general
(Definition of calibre from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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