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 垫圈;衬垫;密封垫 The engine had blown a gasket (= had allowed steam, etc. to escape) 发动机的密封圈漏气了。 - (figurative, informal)
He blew a gasket at the news (= became very angry). 他听到这消息勃然大怒。
Word Originearly 17th cent.: perhaps from French garcette ‘thin rope’ (originally ‘little girl’), diminutive of garce, feminine of gars ‘boy’.