Source : Webster's Revised Unabridged Dictionary (1913)

Mossy \Moss"y\, a. [Compar. {Mossier}; superl. {Mossiest}.]
   1. Overgrown with moss; abounding with or edged with moss;
      as, mossy trees; mossy streams.

            Old trees are more mossy far than young. --Bacon.

   2. Resembling moss; as, mossy green.

Source : WordNet®

mossy
     adj 1: overgrown with moss [syn: {moss-grown}]
     2: (used pejoratively) out of fashion; old fashioned;
        "moss-grown ideas about family life" [syn: {fogyish}, {moss-grown},
         {stick-in-the-mud(p)}, {stodgy}]