Lewis & Short

flexūra, ae, f. [flexus, from flecto], a bending, winding, turning (rare; not in Cic.).

  1. I. Lit.: lateris, Lucr. 4, 336: angustiae flexuraeque vicorum, Suet. Ner. 38.
    1. B. Trop.: virtus recta est: flexuram non recipit, Sen. Ep. 71, 19.
  2. II. Transf., in gram., inflection, declension of a word, Varr. L. L. 10, § 28 Müll.