口 means mouth and is a JLPT N5 kanji. It has 3 strokes and uses the mouth radical (口).
Stroke order · 3 strokes
On'yomi (音読み)
コウ、ク
Kun'yomi (訓読み)
くち
Radical
口 · mouth
Strokes
3
How to remember 口
A picture of an open mouth, which turned square as it was drawn over time. Eating, speaking, asking questions — anything to do with the mouth, this character shows up.