The Collaborative International Dictionary of English v.0.48:

Bacchant \Bac"chant\, n.; pl. E. Bacchants, L. Bacchantes.
   [L. bacchans, -antis, p. pr. of bacchari to celebrate the
   festival of Bacchus.]
   1. A priest of Bacchus.
      [1913 Webster]

   2. A bacchanal; a reveler. --Croly.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Bacchant \Bac"chant\, a.
   Bacchanalian; fond of drunken revelry; wine-loving; reveling;
   carousing. --Byron.
   [1913 Webster]

WordNet (r) 3.0 (2006):

bacchant
    n 1: someone who engages in drinking bouts [syn: drunken
         reveler, drunken reveller, bacchanal, bacchant]
    2: a drunken reveller; a devotee of Bacchus [syn: bacchant,
       bacchanal]
    3: (classical mythology) a priest or votary of Bacchus