切 means to cut and is a JLPT N4 kanji. It has 4 strokes and uses the knife radical (刀).
Stroke order · 4 strokes
On'yomi (音読み)
セツ、サイ
Kun'yomi (訓読み)
き(る)、
Radical
刀 · knife
Strokes
4
How to remember 切
七 (seven) + 刀 (knife): cutting something into seven pieces with a knife. 切る (kiru) = to cut; 大切 (taisetsu) = precious — something you don't want to cut.