subframe /subˈfrām/

1. The frame on which the coachwork of a motor car is built (cf chassis)
2. A frame built into a wall to which a door or window frame is fixed

• backflips
• back-formation
• back-formations
• back-friend
• back-friends
• backgammon
• backgammoned
• backgammoning
• backgammons
• back-ganging
• back garden
• back gardens
• back green
• back greens
• background
• background heating
• background processing
• background queue
• background radiation
• background radiations
• backgrounds
• background tasks
• back-hair
• back-hairs
• backhand