Jacket sleeves (4)
I believe the answer is:
arms
'jacket sleeves' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for arms that I've seen before include "What the Venus de Milo lacks" , ". . . . and The Man (G.B. Shaw)" , "Crest - guns" , "bombs and guns etc" , "See 12" .)