骨 means bone and is a JLPT N2 kanji. It has 10 strokes and uses the bone radical (骨).
Stroke order · 10 strokes
On'yomi (音読み)
コツ
Kun'yomi (訓読み)
ほね
Radical
骨 · bone
Strokes
10
How to remember 骨
What's left after the flesh (月) is stripped away — bone; the top of the kanji is literally a picture of the joint. 骨折 (bone fracture) — hopefully not something you learn while skiing.