口 kǒu mouthclassifier for things with mouths (people, domestic animals, cannons, wells etc)classifier for bites or mouthfuls Example sentences 我家有三口人。 wǒ jiā yǒu sān kǒu rén. There are three people in my family 他家有五口人。 tā jiā yǒu wǔ kǒu rén. There are five people in his family