(a) To cause (sth.) to become corrugated, produce wrinkles in (sth.); ~ togeder; maken wrinkled, wrinkle (sth.); (b) med. to cause (the eyelids) to shrink up or shrivel; (c) ben wrinkled, to be coiled up, be wrapped (around sth.); wrinkled double, curled or coiled up;—used in fig. context; (d) ben wrinkled, to be constructed so as to be filled with turnings or confusingly twisted or contorted paths.