flexūra
flexūra, ae, f. flexus, from flecto, a bending, winding, turning (rare; not in Cic.). Lit.: lateris, Lucr. 4, 336: angustiae flexuraeque vicorum, Suet. Ner. 38.— Trop.: virtus recta est: flexuram non recipit, Sen. Ep. 71, 19.— Transf., in gram., inflection, declension of a word, Varr. L. L. 10, § 28 Müll.