Lewis & Short

circum-textus, a, um, Part. [texo], woven all around: velamen, Verg. A. 1, 649.
Subst.: circum-textum, i, n., a garment inwoven with purple: et quod amictui habet purpuram circum, vocant circumtextum, Varr. L. L. 5, § 132; cf. Isid. Orig. 19, 24, 10.