The Collaborative International Dictionary of English v.0.48:

Green \Green\, v. t. [imp. & p. p. Greened (great): p. pr. &
   vb. n. Greening.]
   To make green.
   [1913 Webster]

         Great spring before
         Greened all the year.                    --Thomson.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Greening \Green"ing\, n.
   A greenish apple, of several varieties, among which the Rhode
   Island greening is the best known for its fine-grained acid
   flesh and its excellent keeping quality.
   [1913 Webster]

WordNet (r) 3.0 (2006):

greening
    n 1: the phenomenon of vitality and freshness being restored;
         "the annual rejuvenation of the landscape" [syn:
         rejuvenation, greening]