Lean and bony (7)
I believe the answer is:
'lean and bony' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for angular that I've seen before include "Rawboned" , "stiff" , "Bony, awkward" , "Having sharp corners, lacking curves or smoothness" , "Having sharp edges or corners" .)