Lewis & Short

flexĭlis, e, adj. [flexus, from flecto].

  1. I. Pliant, pliable, flexile (poet. and in postAug. prose): cornu, Ov. M. 5, 383: ulmus et fraxinus, Plin. 16, 40, 79, § 219: betulla, id. 16, 18, 30, § 75: cervix ad circumspectum, id. 11, 37, 67, § 177: vitrum, id. 36, 26, 66, § 195: lectuli, Amm. 22, 4.
  2. II. Bent, curved: spicae, App. M. 6 init. (Ov. Am. 1, 14, 26, read nexilis, Merk.).