とこぶしMeaningsNoun1. Sulculus diversicolor supertexta (species of abalone or ear shell) (Usually kana)Other spellings常とこ節ぶし床とこ伏ぶしUsually written in kanaOther readingsトコブシKanji in other spellings常usual節joint床floor伏lay face downPitch accentとこぶし