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