The Collaborative International Dictionary of English v.0.48:

Sandy \Sand"y\, a. [Compar. Sandier; superl. Sandiest.] [AS.
   sandig.]
   1. Consisting of, abounding with, or resembling, sand; full
      of sand; covered or sprinkled with sand; as, a sandy
      desert, road, or soil.
      [1913 Webster]

   2. Of the color of sand; of a light yellowish red color; as,
      sandy hair.
      [1913 Webster]