Source : Webster's Revised Unabridged Dictionary (1913)

Greenwood \Green"wood`\, n.
   A forest as it appears is spring and summer.

Greenwood \Green"wood`\, a.
   Pertaining to a greenwood; as, a greenwood shade. --Dryden.

Source : WordNet®

greenwood
     n : woodlands in full leaf; "the greenwood was Robin Hood's
         home"