Turn into a distorted shape (5)
I believe the answer is:
twist
'turn into a distorted shape' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for twist that I've seen before include "Wrench, distort" , "One wanting more" , "Deal card face upwards" , "Dickens's 'Oliver - - '" , "Strong thread" .)