Merriam-Webster Collegiate Dictionary - winding

 I. noun  Date: before 12th century  1. material (as wire) wound or coiled about an object (as an armature); also a single turn of the wound material  2.  a. the act of one that winds  b. the manner of ~ something  3. a curved or sinuous course, line, or progress  II. adjective  Date: 1530 marked by ~: as  a. having a curved or spiral course or form a ~ stairway  b. having a course that winds a ~ road