Source : Webster's Revised Unabridged Dictionary (1913)

Averruncate \Av`er*run"cate\, v. t. [L. averruncare to avert; a,
   ab, off + verruncare to turn; formerly derived from ab and
   eruncare to root out. Cf. {Aberuncate}.]
   1. To avert; to ward off. [Obs.] --Hudibras.

   2. To root up. [Obs.] --Johnson.