Phase doorway - an entrance on the backstage spot of theater; utilized by performers and also other theater personnel encroachment, intrusion, invasion - any entry into a location not previously occupied; "an invasion of holidaymakers"; "an invasion of locusts" hold - maintain the eye of; "The soprano held the viewers"; https://entrancemats80133.blogsuperapp.com/38437598/facts-about-entrance-mats-revealed