A makeshift weapon composed of an old dime bag (small sandwich bag) full of shaved iron filings. The bag is struck across a targets face with great force, breaking the bag and covering the targets face, and particularly eyes, with iron filings. The iron filings will destroy eye tissue, and if inhaled will destroy lung tissue.
So named for its use in the Philadelphia crime world.
Andre now coughs up blood because he got Philly dime bagged.