bacchanal

a.

1. Relating to Bacchus or his festival.
2. Engaged in drunken revels; drunken and riotous or noisy.

n.

1. A devotee of Bacchus; one who indulges in drunken revels; one who is noisy and riotous when intoxicated; a carouser.
2. The festival of Bacchus; the bacchanalia.
3. Drunken revelry; an orgy.
4. A song or dance in honor of Bacchus.