Source : Webster's Revised Unabridged Dictionary (1913)

Fatness \Fat"ness\, n.
   1. The quality or state of being fat, plump, or full-fed;
      corpulency; fullness of flesh.

            Their eyes stand out with fatness.    --Ps. lxxiii.
                                                  7.

   2. Hence; Richness; fertility; fruitfulness.

            Rich in the fatness of her plenteous soil. --Rowe.

   3. That which makes fat or fertile.

            The clouds drop fatness.              --Philips.

Source : WordNet®

fatness
     n : excess bodily weight; "she found fatness disgusting in
         herself as well as in others" [syn: {fat}, {blubber}, {avoirdupois}]
         [ant: {leanness}]