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

御馳走様でした[gochisousamadeshita] That was a delicious meal (said after meals)
一っ走り[hitoppashiri] spin (as in 'take a car for a spin')
一走り[hitohashiri] spin
逸走[issou] escape
駅伝競走[ekidenkyousou] long-distance relay race

快走[kaisou] fast sailing (running)
滑走[kassou] glide
滑走路[kassouro] runway
完走[kansou] running the race
競走[kyousou] race