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

ト音記号[toonkigou] G clef
ドル記号[dorukigou] dollar sign ($)
ハ音記号[haonkigou] C clef
ブレーク信号[bureekushingou] break signal
ブロック番号[burokkubangou] block number

ヘ音記号[heonkigou] F clef
哀号[aigou] moan
暗号[angou] code
暗号化[angouka] encryption
暗号化手法[angoukashuhou] cryptography