Definition

Street slang for a firearm, particularly handguns carried for protection or intimidation by gang members and those in similar circles. It's the kind of understated terminology that lets people discuss weapons without explicitly saying 'gun' in mixed company.

Example Usage

Security was tight—they were checking everyone to make sure nobody brought a piece into the venue.

Source: Urban Dictionary (https://www.urbandictionary.com/define.php?term=piece&defid=17692)