Torn coat, almost gone out of shape (7)
I believe the answer is:
octagon
'shape' is the definition.
(octagon is a kind of shape)
'torn coat almost gone' is the wordplay.
'torn' indicates anagramming the letters.
'almost' means to remove the last letter (most of the word but not all of it).
'gone' with its final letter taken off is 'gon'.
'coat' is an anagram of 'octa'.
'octa'+'gon'='OCTAGON'
'out of' is the link.
(Other definitions for octagon that I've seen before include "Shape of a square with the corners cut off" , "Figure of many sides" , "regular form" , "Eight-sided object" , "plane figure" .)