piece of metal; metal fragment
Refers to a small, often broken or cut piece of metal. Can be used for shavings, scraps, or fragments.
A piece of metal was lying on the factory floor.
Metal fragments scattered in the accident.
破片 is a broader term for any fragment or splinter, not necessarily metal. 金属片 is more specific.
Compound of 金属 (metal) and 片 (piece, fragment).