From Longman Dictionary of Contemporary Englishscreen something ↔ off phrasal verbto separate one part of a room from the rest by putting a thin temporary wall or a curtain across it The back part of the room had been screened off. → screen→ See Verb table
Examples from the Corpus
screen off• Look for a locked padlock on the status bar at the bottom of your screen.• The single-engine Socata vanished from radar screens after taking off for Mull from Blackpool on Saturday.• Redness lights the interior of the submersible; the glow from dials and video screens reflects softly off the burnished titanium hull.• He stood, scarlet-cheeked, as she moved towards the screen, throwing off the kimono as she went.• The screen gave off the only light. 