Source : Webster's Revised Unabridged Dictionary (1913)

Mellow \Mel"low\, a. [Compar. {Mellower}; superl. {Mellowest}.]
   [OE. melwe; cf. AS. mearu soft, D. murw, Prov. G. mollig
   soft, D. malsch, and E. meal flour.]
   1. Soft or tender by reason of ripeness; having a tender
      pulp; as, a mellow apple.

   2. Hence:
      (a) Easily worked or penetrated; not hard or rigid; as, a
          mellow soil. ``Mellow glebe.'' --Drayton
      (b) Not coarse, rough, or harsh; subdued; soft; rich;
          delicate; -- said of sound, color, flavor, style, etc.
          ``The mellow horn.'' --Wordsworth. ``The mellow-tasted
          Burgundy.'' --Thomson.

                The tender flush whose mellow stain imbues
                Heaven with all freaks of light.  --Percival.

   3. Well matured; softened by years; genial; jovial.

            May health return to mellow age.      --Wordsworth.

            As merry and mellow an old bachelor as ever followed
            a hound.                              --W. Irving.

   4. Warmed by liquor; slightly intoxicated. --Addison.