Vocabulary What does 口座 (こうざ, kouza) mean? 口座 (こうざ, kouza) means account (e.g. bank). Quick factsReadingこうざRomajikouzaPart of speechnoun 口座こうざkouzaaccount (e.g. bank)1noun account (e.g. bank)Kanji in this word口mouth座sit; seat, throne