Related Clues:

• Boat's flat stern — horizontal beam
• What goes between storeys, including a new kind of window
• Staircase fitted with a new window
• Romans struggled under the first beam
• Tenant's initial payment to deliver timber for doorframe
• Ready for release after time in part of ship
• Bar very much upset about endless tirade
• After time, 'Swallows and Amazons' author almost makes one beam
• It may appear smart on the stern of a boat
• Money kidnapper demands after time that’s found in ship
• What could make matrons beam
• Lintel of a door or window
• An in-flight means of providing illumination
• Steps round an elevated aperture
• Dispute about a new, large semicircular window