In`ter*ne"cine (?), a. [L. internecinus deadly, murderous, fr. internecare to kill, to slaughter; inter between + necare to kill; akin to Gr. dead. See Necromancy.]
Involving, or accompanied by, mutual slaughter; mutually destructive.
Internecine quarrels, horrible tumults, stain the streets with blood.
Motley.
© Webster 1913.