I. ˈbak-ˌstāj adjective
Date: 1916
1. : of, relating to, or occurring in the area behind the stage and especially in the dressing rooms
2. : of or relating to the private lives of theater people
3. : of or relating to the inner working or operation (as of an organization)
II. ˈbak-ˈstāj adverb
Date: 1922
1. : in or to a backstage area
2. : in private : secretly