Stage door - an entrance to the backstage location of theater; used by performers together with other theater staff encroachment, intrusion, invasion - any entry into a place not Beforehand occupied; "an invasion of travellers"; "an invasion of locusts" hold - maintain the eye of; "The soprano held the audience"; https://jeffreyyncpd.blogozz.com/36802790/the-best-side-of-entrance-mats