Source : Webster's Revised Unabridged Dictionary (1913)

Mottle \Mot"tle\, v. t. [imp. & p. p. {Mottled}; p. pr. & vb. n.
   {Mottling}.] [From {Mottled}.]
   To mark with spots of different color, or shades of color, as
   if stained; to spot; to maculate.

Mottled \Mot"tled\, a. [From {Motley}.]
   Marked with spots of different colors; variegated; spotted;
   as, mottled wood. ``The mottled meadows.'' --Drayton.

Source : WordNet®

mottled
     adj : having spots or patches of color [syn: {dappled}]