口 means “mouth”

くち · kuchi

Kun'yomi (Japanese reading)
くち
On'yomi (Chinese reading)
コウ, ク

JLPT N5 · Taught in grade 1 · 3 strokes

The story

A simple open square: the mouth is a gateway for words, food, and breath. One of the most fundamental kanji radicals.

Used in 入口 (iriguchi, entrance) and 人口 (jinkou, population)

Words with 口

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Readings from KANJIDIC2, © EDRDG, CC BY-SA.