Suspend head, missing viewpoint (5)
I believe the answer is:
angle
'viewpoint' is the definition.
(angle is a kind of viewpoint)
'suspend head missing' is the wordplay.
'suspend' becomes 'dangle' (dangling is a kind of suspending).
'head missing' means to remove the first letter.
'dangle' with its initial letter taken away is 'ANGLE'.
(Other definitions for angle that I've seen before include "Germanic invader" , "Use a rod and line" , "fork" , "Fish with a rod" , "that is often right" .)