ひぶた 火蓋 LinksSentence search for 火蓋Sentence search for ひぶたSentence search for 火ぶたKanji details for 火 and 蓋Edit in JMdict Noun1. apron of a gun; cover for the touch-hole on a cannon or matchlockSee also 火蓋を切るOther forms火ぶた 【ひぶた】 Discussions Log in to talk about this word.