ばい 貝 LinksSentence search for 貝Sentence search for ばいSentence search for バイKanji details for 貝Edit in JMdict Noun1. Japanese babylon (species of shelled mollusk, Babylonia japonica); Japanese ivory shellUsually written using kana aloneNoun2. spinning top (traditionally made from a Japanese babylon shell)Abbreviation, See also 貝独楽Other formsバイ Discussions Log in to talk about this word.