御猪口[ochoko] small cup
片口鰯[katakuchiiwashi] Japanese anchovy (Engraulis japonica)
白口[shiroguchi] white croaker (Pennahia argentata)
悪たれ口[akutareguchi] abuse
悪口雑言[akkouzougon] all kinds of malicious gossip

異口同音[ikudouon] in concert
異口同音に[ikudouonni] in one voice
ひと口[hitokuchi] mouthful
一口商い[hitokuchiakinai] an immediate definite deal
一口同音[ikkudouon] reading in unison

土耳古[toruko] Turkey
白耳義[berugii] Belgium
外耳[gaiji] external ear
牛耳る[gyuujiru] to control
口耳[kouji] mouth and ear

口耳の学[koujinogaku] shallow learning
耳がとおい[mimigatooi] poor hearing
耳をすます[mimiwosumasu] to listen carefully
耳を貸す[mimiwokasu] to lend an ear to