Definition of casting vote noun from the Oxford Advanced Learner's Dictionary


casting vote

BrE BrE//ˌkɑːstɪŋ ˈvəʊt//
; NAmE NAmE//ˌkæstɪŋ ˈvoʊt//
[usually singular]
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the vote given by the person in charge of an official meeting to decide an issue when votes on each side are equal You have the casting vote. The chairman gave his casting vote in favour. Word Originearly 17th cent.: from an obsolete sense of cast ‘turn the scale’.
See the Oxford Advanced American Dictionary entry: casting vote