Gather angle was wrong (5)
I believe the answer is:
glean
'gather' is the definition.
(I know that glean is a more specific form of the action gather)
'angle was wrong' is the wordplay.
'was wrong' indicates anagramming the letters (I've seen 'is wrong' mean this).
'angle' anagrammed gives 'GLEAN'.
(Other definitions for glean that I've seen before include "Angel (anag.)" , "Pick up (information)" , "Gather remnants of corn" , "Learn by gathering bits" , "Collect bit by bit, often with difficulty" .)