shiv

and chiv (ʃɪv)

1. n. a knife. (Underworld.) Swiftly and silently his shiv found its way up under Rocko’s ribs. All for a silly dame.

2. tv. to stab someone. (Underworld.) The boss told Joel Cairo to get Sam one way or the other—shiv him, burn him, clobber him—but get him.