Source : Webster's Revised Unabridged Dictionary (1913)

Horrent \Hor"rent\, a. [L. horrens, p. pr. of horrere to
   bristle. See {Horror}.]
   Standing erect, as bristles; covered with bristling points;
   bristled; bristling.

         Rough and horrent with figures in strong relief. --De
   Quincey.

         With bright emblazonry and horrent arms. --Milton.