Source : Webster's Revised Unabridged Dictionary (1913)

Lusty \Lust"y\, a. [Compar. {Lustier}; superl. {Lustiest}.]
   [From {Lust}. See {Lust}, and cf. {Luscious}.]
   1. Exhibiting lust or vigor; stout; strong; vigorous; robust;
      healthful; able of body.

            Neither would their old men, so many as were yet
            vigorous and lusty, be left at home.  --Milton.

   2. Beautiful; handsome; pleasant. [Obs.] --Spenser.

   3. Of large size; big. [Obs.] `` Three lusty vessels.''
      --Evelyn. Hence, sometimes, pregnant. [Obs. or Prov.]

   4. Lustful; lascivious. [Obs.] --Milton.

Source : WordNet®

lusty
     adj 1: vigorously passionate [syn: {lustful}]
     2: endowed with or exhibiting great bodily or mental health; "a
        hearty glow of health" [syn: {hearty}, {full-blooded}, {red-blooded}]
     [also: {lustiest}, {lustier}]