A piece of ornamental jewellery having a pin allowing it to be fixed to garments worn on the upper body.
A painting all of one colour, such as a sepia painting.
To adorn as with a brooch.
A pin in the form of a clasp, which has a guard to cover the sharp point; used to join two pieces of fabric, etc., together temporarily.
The pin of a hand grenade, which prevents accidental detonation.