Definition of gasket noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈɡæskɪt//
; NAmE NAmE//ˈɡæskɪt//
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a flat piece of rubber, etc. placed between two metal surfaces in a pipe or an engine to prevent steam, gas or oil from escaping The engine had blown a gasket (= had allowed steam, etc. to escape). (figurative, informal) He blew a gasket at the news (= became very angry). Word Originearly 17th cent.: perhaps from French garcette ‘thin rope’ (originally ‘little girl’), diminutive of garce, feminine of gars ‘boy’.
See the Oxford Advanced American Dictionary entry: gasket