gleaner

from WordNet (r) 3.0 (2006)

gleaner
    n 1: someone who picks up grain left in the field by the
         harvesters
    2: someone who gathers something in small pieces (e.g.
       information) slowly and carefully

from The Collaborative International Dictionary of English v.0.48

Gleaner \Glean"er\, n.
   1. One who gathers after reapers.
      [1913 Webster]

   2. One who gathers slowly with labor. --Locke.
      [1913 Webster]

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