What is a bend, or a series of bends and turns; a winding, or a series of windings; a wave line; a curve. A line of coast certainly amounting, with its sinuosities, to more than 700 miles. Sydney Smith called?

sinuosity — A bend, or a series of bends and turns; a winding, or a series of windings; a wave line; a curve. A line of coast certainly amounting, with its sinuosities, to more than 700 miles. Sydney Smith. (Webster's 1913.)