Derives from "gun slinger". A 6f or larger, circle or square of denim, canvas, or burlap with a hole for the wearer's head in the center. Usually woven of black, dark brown, and navy blue threads. Worn over a shirt.
The slinger disguises the gunslinger's movements. It is also often worn over long johns at night as a blanket.
by Marten Fisher November 25, 2006