Lewis & Short

Cinxia, ae. f. [cingo], an appellation of Juno, as tutelary goddess of marriage, because, acc. to Paul. ex Fest., initio conjugii solutio erat cinguli, quo nova nupta erat cincta, Fest. p. 63, 9; and Arn. 3, p. 115.
Access. form cinctia, acc. to Mart. Cap. 2, § 149.