Source : Webster's Revised Unabridged Dictionary (1913)

Drunkard \Drunk"ard\, n. [Drunk + -ard.]
   One who habitually drinks strong liquors immoderately; one
   whose habit it is to get drunk; a toper; a sot.

         The drunkard and glutton shall come to poverty. --
                                                  Prov. xxiii.
                                                  21.

Source : WordNet®

drunkard
     n : a chronic drinker [syn: {drunk}, {rummy}, {sot}, {inebriate}]