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English definition of “bar”

bar

noun [C] (MUSIC)    /bɑːr/ US  /bɑːr/ (US also measure)
one of the small equal parts into which a piece of music is divided, containing a fixed number of beats: Waltzes have three beats in/to the bar (= in each bar).Beats or lengths of musical notes
(Definition of bar noun (MUSIC) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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