Get the wrinkles out (4)
I believe the answer is:
iron
'get the wrinkles out' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for iron that I've seen before include "Smooth (clothes)" , "Wellington was known as the .... Duke" , "A magnet attracts it" , "What's used to make pitch" , "See 14" .)