Related Clues:

• Letter-shaped add-on
• Bracket shape
• 90-degree pipe joint
• Head of London?
• 90° pipe turn
• 'ot place
• House addition
• Building adjunct
• Wing with no feathers?
• Shape of some six-sided rooms
• Plumber's pipe bend
• Plumbing supply
• Third of July?
• School closing?
• Extension forming a right angle