むしず 虫酸 LinksSentence search for 虫酸Sentence search for むしずSentence search for 虫唾Sentence search for 虫ずKanji details for 虫 and 酸Edit in JMdict Noun1. stomach acid that flows backwards into the mouth (due to acid reflux)See also 虫唾が走るOther forms虫唾 【むしず】、虫ず 【むしず】 Discussions Log in to talk about this word.