破片 (hahen) means “fragment” | MotiTan Japanese Dictionary

More examples

割れた陶器の破片をつなぎ合わせて、元の形に戻しました。wa re ta tō ki no ha hen o tsu na gi a wa se te moto no katachi ni modo shi ma shi ta

I joined the fragments of the broken pottery and restored its original shape.

Refers to a detached part of something larger, with attention on its status as a remaining piece rather than on its material.

かけらkakera: A small piece that has come away from something larger.
断片danpen: A portion separated from a larger whole and left incomplete.

壊れたり割れたりした物から離れた一部分。kowa re ta ri wa re ta ri shi ta mono ka ra hana re ta ichi bu bun

破片 (hahen) is a Sino-Japanese compound of 破 (ha, "break") and 片 (hen, "piece"), linking the idea of breaking with a separated piece.

A fragment can come from many materials, so the word does not by itself identify whether the piece is made of glass, wood, metal, or another substance.