こぶはくちょうMeaningsNoun1. mute swan (Cygnus olor) (Usually kana)Other spellings瘤こぶ白はく鳥ちょうUsually written in kanaOther readingsコブハクチョウKanji in other spellings瘤swelling白white鳥birdPitch accentこぶはくちょう