Entry 6 senses · 2 variants Webster, 1913 Bacchanal /bək-ān'-əl/ · Bac·cha·nal · IPA /ˈbækənəl/ a. n. 01 a. Relating to Bacchus or his festival. 1. Relating to Bacchus or his festival. 2. Engaged in drunken revels; drunken and riotous or noisy. 02 n. A devotee of Bacchus; one who indulges in drunken revels; one who is noisy and riotous when intoxicated; a carouser. 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 a dance in honor of Bacchus.