Source : Webster's Revised Unabridged Dictionary (1913)

Abstemious \Ab*ste"mi*ous\, a. [L. abstemius; ab, abs + root of
   temetum intoxicating drink.]
   1. Abstaining from wine. [Orig. Latin sense.]

            Under his special eye Abstemious I grew up and
            thrived amain.                        --Milton.

   2. Sparing in diet; refraining from a free use of food and
      strong drinks; temperate; abstinent; sparing in the
      indulgence of the appetite or passions.

            Instances of longevity are chiefly among the
            abstemious.                           --Arbuthnot.

   3. Sparingly used; used with temperance or moderation; as, an
      abstemious diet. --Gibbon.

   4. Marked by, or spent in, abstinence; as, an abstemious
      life. ``One abstemious day.'' --Pope.

   5. Promotive of abstemiousness. [R.]

            Such is the virtue of the abstemious well. --Dryden.

Source : WordNet®

abstemious
     adj 1: sparing in consumption of especially food and drink; "the
            pleasures of the table, never of much consequence to
            one naturally abstemious"- John Galsworthy [ant: {gluttonous}]
     2: marked by temperance in indulgence; "abstemious meals"; "a
        light eater"; "a light smoker"; "ate a light supper" [syn:
         {light(a)}]