大おお口ぐち顧こ客きゃくMeaningsNoun1. major customer; large customerOther readings大おお口くち顧こ客きゃくKanji used大large口mouth顧look back on客guestComposed of大おお口ぐちbig mouth; mouth opened wide; boastful speech; tall talk; bragging; boasting; large amount; large quantityNoun顧こ客きゃくcustomer; client; patronNoun