ppl. a. [f. L. spīra SPIRE sb.3] Spirally twisted.
1871. Darwin, Desc. Man, II. xvii. 246. The males of this species have long straight spirated horns, nearly parallel to each other, and directed backwards.
1890. [R. E. Forrest], in Cornh. Mag., Sept., 230. [Their] tall, spirated horns and jet-black sides are indicative of their age.
