气门芯 qìménxīn valve core Origin Definitions Defs Strokes Stroke Words Sentences Sents 气门 氣門 qìmén valve A valve that controls the entry or exit of air, such as a tire valve or an engine valve; (obsolete) term for an accelerator 油门 yóumén芯 xīn noun core wick; fuse; core; an object inserted into another, such as a pencil lead or electronic chip