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English definition of “.45”

.45

noun [C] uk   /ˌfɔː.tiˈfaɪv/ us    /ˌfɔːr.t̬i-/
a large type of pistol (= small gun)Handguns and riflesAiming and aimHand weapons
(Definition of .45 from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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