Collect, gather (5)
I believe the answer is:
glean
This clue is a double definition.
'collect' is the first definition.
(gleaning is a kind of collecting)
'gather' is the second definition.
(gleaning is a kind of gathering)
(Other definitions for glean that I've seen before include "Collect small pieces" , "Gather remnants of corn" , "Gather (info or the harvest)" , "Collect gradually from scattered sources" , "Gradually put together" .)