circĕs, itis, m. [circum-ire],
a circle (ante- and post-class.): ut parvi circuli Anuli, sic magni dicebantur circites Ani, Varr L. L. 6, § 8 Müll.; Sid. Carm. 22, 222. —So of the circumference of the circus , Sid. Carm. 23, 381.