Pick up fallen angel? (5)
I believe the answer is:
glean
'pick up' is the definition.
(I've seen this in another clue)
'fallen angel?' is the wordplay.
'fallen' is an anagram indicator.
'angel' with letters rearranged gives 'GLEAN'.
(Other definitions for glean that I've seen before include "Pull together from various sources" , "Collect gradually from scattered sources" , "Gather (after reapers)" , "Gather, pick up" , "Gather remnants of corn" .)