Definition of "sinuosity"

Meander is a Riuer in Lycia, a Prouince of Natolia, or Aſia minor famous for the ſinuoſitie and often turning thereof, […]

1597, Michael Drayton, “[Englands Heroicall Epistles.] The Epistle of Rosamond to King Henry the Second. Notes of the Chronicle Historie.”, in Poems: […], London: […] W[illiam] Stansby for Iohn Smethwicke, […], published 1613, folios 4, verso – 5, recto

She was like a Beardsley Salome, he had said. And indeed she had the narrow eyes and the high cheekbone of that creature, and as nearly the sinuosity as is compatible with human symmetry.

1922, Ben Travers, chapter 1, in A Cuckoo in the Nest‎