The Collaborative International Dictionary of English v.0.48:

Alcoholic \Al`co*hol"ic\ ([a^]l`k[-o]*h[o^]l"[i^]k), a. [Cf. F.
   alcolique.]
   Of or pertaining to alcohol, or partaking of its qualities;
   derived from, or caused by, alcohol; containing alcohol; as,
   alcoholic mixtures; alcoholic gastritis; alcoholic odor.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Alcoholic \Al`co*hol"ic\, n.
   1. A person given to the use of alcoholic liquors.
      [1913 Webster]

   2. pl. Alcoholic liquors.
      [1913 Webster]

WordNet (r) 3.0 (2006):

alcoholic
    adj 1: characteristic of or containing alcohol; "alcoholic
           drinks" [ant: nonalcoholic]
    2: addicted to alcohol; "alcoholic expatriates in Paris"- Carl
       Van Doren [syn: alcoholic, alcohol-dependent]
    n 1: a person who drinks alcohol to excess habitually [syn:
         alcoholic, alky, dipsomaniac, boozer, lush,
         soaker, souse]