かい 貝 Common word JLPT N2 Wanikani level 4 Play audio Show 1 collocation 貝を吹く - to blow a conch LinksSentence search for 貝Sentence search for かいSentence search for 介Kanji details for 貝Edit in JMdict Noun1. shellfishNoun2. seashell; shellSee also 貝殻Other forms介 【かい】Notes介: Rarely-used kanji form. Discussions Log in to talk about this word.