皮
pí
leather
surname Pi; skin; fur; CL:張|张[zhang1]; pico- (one trillionth); naughty
a picture of 皮 → a hand stripping hide from a carcass
The ancient form shows a hand wielding a tool to peel hide from an animal carcass. That act of stripping gave the character its core meaning: the outer layer, the skin.
这个孩子很皮，总是不听话。
zhè ge hái zi hěn pí，zǒng shì bù tīng huà。
This child is very naughty and never listens.
冬天到了，他买了一件皮大衣。
dōng tiān dào le，tā mǎi le yī jiàn pí dà yī。
Winter arrived, and he bought a leather overcoat.