Bacchēĭs — Lewis & Short
Bacchēĭs, ĭdis,
I adj. f., of or pertaining to Bacchis, the ancestor of the Corinthian Bacchiadœ; hence, poet. for Corinthian:
Ephyres Baccheidos altum Culmen,i. e. Corinth, Stat. S. 2, 2, 34.