Answer: involute

AnswerCrossword Clue
INVOLUTERolled up in a spiral.
involuterolled inward from the edge, as a leaf
involuteany curve of which a given curve is the evolute
involuteto roll or curl up; become involute
involuteto roll or curl up
involutecurled or curved inward or spirally
involuteto return to a normal shape, size, or state
involuteintricate; complex