jag

(noun) a sharp projection on an edge or surface. Examples: "He clutched a jag of the rock."

(noun) a slit in a garment that exposes material of a different color underneath; used in Renaissance clothing.

(noun) a flap along the edge of a garment; used in medieval clothing. Synonyms: dag.

(noun) a bout of drinking or drug taking.

(verb) cut teeth into; make a jagged cutting edge.