衤

yī clothing (left-side form)

Component (a building block) — not the same thing as a radical or a sound component. · 5strokes

Forms

Characters that use it as a component

初补衫衬袄袍袖袜

Characters filed under it as a radical

Kangxi radical no.145 · 衣 · 6strokes — The 214 Kangxi radicals

Filed under it in a dictionary. That is a lookup convention — it does not mean it is the only part the character is built from.

衣表衫衬衰衷袁袄