Definition of "glean"

To glean the broken ears after the man / That the main harvest reaps.

c. 1598–1600 (date written), William Shakespeare, “As You Like It”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act III, scene v]

Let me now go to the field, and glean ears of corn after him in whose sight I shall find grace.

1611, The Holy Bible, […] (King James Version), London: […] Robert Barker, […], Ruth 2:2

content to glean what we can from […] experiments

1689 (indicated as 1690), [John Locke], An Essay Concerning Humane Understanding. […], London: […] Eliz[abeth] Holt, for Thomas Basset, […]

He said Iran was "well aware of what priceless technological information" could be gleaned from the aircraft.

8 December 2011, BBC News, Iran shows film of captured US drone, available in http://www.bbc.co.uk/news/world-middle-east-16098562

He [August Strindberg] gleaned a living from newspaper work for a few months, but in the summer went to a fishing village […] where […] he wrote his great historical drama Master Olof.

1912, Edith and Warner Oland, “Biographical Note”, in Three Plays By August Strindberg, page xi

The gleans of yellow thyme distend his thighs.

1697, Virgil, “The Fourth Book of the Georgics”, in John Dryden, transl., The Works of Virgil: Containing His Pastorals, Georgics, and Æneis. […], London: […] Jacob Tonson, […]

The gleane of a Cow hauing newly calued […] is good for any vlcers of the visage.

1601, C[aius] Plinius Secundus [i.e., Pliny the Elder], “[Book II.]”, in Philemon Holland, transl., The Historie of the World. Commonly Called, The Naturall Historie of C. Plinius Secundus. […], (please specify |tome=1 or 2), London: […] Adam Islip, published 1635