破口

破口	pò kǒu	tear or rupture / to have a tear (e.g. in one's clothes) / without restraint (e.g. of swearing)
破	pò	broken / damaged / worn out / lousy / rotten / to break, split or cleave / to get rid of / to destroy / to break with / to defeat / to capture (a city etc) / to expose the truth of
口	kǒu	mouth / classifier for things with mouths (people, domestic animals, cannons, wells etc) / classifier for bites or mouthfuls