Core Meaning
The character 口 primarily means "mouth," referring to the physical part of the face used for speaking, eating, and breathing. It is a very common and basic noun in Mandarin.
Extended Meanings
Besides the literal mouth, 口 is also used metaphorically to mean an entrance or opening, such as the mouth of a river or a cave. This usage highlights the idea of an opening or gateway.
Counting Unit
口 is a unique measure word used to count family members, often translated as "people" in English but specifically emphasizing the number of mouths to feed in a household. This usage is common in everyday conversation about family size.
Common Collocations
- 口袋 (kǒudài): pocket
- 入口 (rùkǒu): entrance
- 出口 (chūkǒu): exit
- 一口气 (yì kǒu qì): in one breath, all at once
Usage Notes
When used to count family members, 口 precedes 人 (person) but the 人 can sometimes be omitted in casual speech. The word 口 can also appear in compound words and idioms related to speaking or openings.
Avoiding Confusion
Do not confuse 口 as a measure word for people with other measure words like 个 (gè). 口 specifically relates to family members or close groups, not just any people.