顧こ客かく層そうMeaningsNoun1. customer base; constituency; customer segment; patron base; clienteleOther readings顧こ客きゃく層そうKanji used顧look back on客guest層layerComposed of顧こ客かくcustomer; client; patronNoun層そうlayer; stratum; seam; bed; class; bracket; group; sheaf; counter for stories (of a building)Noun