gleaning

v. gather or collect crops that harvesters have left behind; gather, compile; discover or learn bit by bit; find out, learn about something

Gleaning is the act of collecting leftover crops from farmers' fields after they have been commercially harvested or on fields where it is not economically profitable to harvest. Some ancient cultures promoted gleaning as an early form of a welfare system. For example, ancient Jewish communities required that farmers not to reap all the way to the edges of a field so as to leave some for the poor and for strangers.(, , , Peah).
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Verb
1. gather, as of natural products; "harvest the grapes"
(synonym) reap, harvest
(hypernym) gather, garner, collect, pull together
(hyponym) cut
(derivation) gleaner

(p. pr. & vb. n.)
of Glean
  

(n.)
The act of gathering after reapers; that which is collected by gleaning.
  

To see gleaners at work at harvest time, denotes prosperous business, and, to the farmer, a bountiful yield of crops. If you are working with the gleaners, you will come into an estate, after some trouble in establishing rights. For a woman, this dream foretells marriage with a stranger.