'Gleaner' definitions:

Definition of 'gleaner'

(from WordNet)
noun
Someone who picks up grain left in the field by the harvesters
noun
Someone who gathers something in small pieces (e.g. information) slowly and carefully

Definition of 'Gleaner'

From: GCIDE
  • Gleaner \Glean"er\, n.
  • 1. One who gathers after reapers. [1913 Webster]
  • 2. One who gathers slowly with labor. --Locke. [1913 Webster]