a. [ L. internecinus deadly, murderous, fr. internecare to kill, to slaughter; inter between + necare to kill; akin to Gr. &unr_; dead. See Necromancy. ] 1. Involving, or accompanied by, mutual slaughter; mutually destructive. [ 1913 Webster ]
Internecine quarrels, horrible tumults, stain the streets with blood. Motley. [ 1913 Webster ]
2. Of or pertaining to internal conflicts within a group; as, internecine quarrels. Syn. -- intramural. [ PJC ]