Sin'ū-ŏs'i-ty, n.
n. [Fr. sinuosité, Sp. sinuosidad, It. sinuosità.]
Sense 1. The quality of being sinuous, or bending in and out.
Sense 2. A series of bends and turns in arches or other irregular figures; a series of windings. “A line of coast certainly amounting, with its sinuosities, to more than 700 miles.” S. Smith.