Become shrunken and wrinkled (7)
I believe the answer is:
shrivel
'become shrunken and wrinkled' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for shrivel that I've seen before include "Wrinkle and contract" , "Desiccate" , "Contract into wrinkles" , "Dehydrate" , "Become dry and withered" .)