Lewis & Short

2. fluxus, ūs, m. [fluo], a flowing, flow, a flux (post-Aug.): sanguinis, Justin. 12, 9, 12: (echenēis piscis) fluxus gravidarum utero sistens, Plin. 9, 25, 41, § 79: ventus non aliud intelligitur quam fluxus aëris, a current of air, id. 2, 43, 44, § 114: resinae, id. 23, 1, 24, § 46: Maeandrico fluxu delicatam vestem humi protrahere, i. e. folds, drapery, Tert. Pall. 4 med. (but in Tac. H. 5, 23 the correct read. is flexu, v. 2. flexus, II. A. fin.).