Twisted balloon shape, often (6)
I believe the answer is:
animal
'twisted balloon shape often' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for animal that I've seen before include "Brute - one of the Muppets" , "I''m Alan (anag) - a wild, crazy person" , "Mammal" , "Living organism characterised by voluntary movement" , "Brutal, sensual" .)