Other forms: brooches; brooched
That fancy pin your Grandma used to wear on her blouse or lapel? It's a brooch, held in place by a sharp needle clasp.
Okay, it's a bit unfair to say Grandmothers alone wear brooches, but they do tend to be worn more by powerful older women — witness Margaret Thatcher and Madeleine Albright (both noted brooch wearers). Not surprisingly, brooch is derived from the old French word brooch, meaning "a long needle."