bacchātĭo — Lewis & Short
bacchātĭo, ōnis, f.id..
I A celebrating of the orgies of Bacchus, Hyg. Fab. 4; 8.—Hence.
II A revelling, raving, in the manner of the Bacchœ (rare): sileatur de nocturnis ejus baccationibus ac vigiliis, * Cic. Verr. 2, 1, 12, § 33.