The Collaborative International Dictionary
Internecion
Internecion \In`ter*ne"cion\, n. [L. internecio.]
Mutual slaughter or destruction; massacre. [Obs.]
--Sir M.
Hale.
Wiktionary
internecion
n. 1 destruction, massacre ("laughter. — That natural propension of self-love, and natural principle of self-preservation, will necessarily break out into wars and ''internecions''" ''Hale'') 2 Mutual destruction (less common)