口
kǒu HSK1

mouth

口 kǒu
mouthful measure word
classifier for bites, sips, or things taken into the mouth

他喝了一口水。

tā hē le yī​kǒu shuǐ.

He took a sip of water.

classifier (entities) measure word
classifier for family members, domestic animals, and objects with openings such as cannons or wells

他家有五口人。

tā jiā yǒu wǔ kǒu rén.

There are five people in his family.

mouth noun
the opening through which an animal or human takes in food

他张大着口，还没回过神来。

tā zhāng​dà zhe kǒu, hái méi huí​guò​shén lái.

He stood there with his mouth wide open, still in a daze.

entrance place word
entrance, exit, or opening of a place like a valley, a street, or a tunnel

Frequency
Character
Written text
212th most common 991.9 per million
Movie subtitles
344th most common 456.5 per million appears in 87% of films
Word
Movie subtitles
123.0 per million appears in 39% of films
Written text
233.5 per million

Details
HSK 2.0
Level 3
HSK 3.0
Level 1
Strokes
3
Unicode
U+53E3

Sources
Definitions
CC-CEDICT
Frequency data
MTSU Chinese text computingSUBTLEX-CHBCC Corpus (BLCU)