Appropriate clothing a little short (7)
I believe the answer is:
trouser
'appropriate' is the definition.
(I've seen this before)
'clothing a little short' is the wordplay.
'clothing' becomes 'trousers' (trousers is a kind of clothing).
'a little short' means to remove the last letter.
'trousers' with its final letter removed is 'TROUSER'.
(Other definitions for trouser that I've seen before include "Pocket (slang)" , "For oneself" , "Pocket (something)" , "Appropriate" , "Our rest (anag)" .)