Related Clues:

• 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
• Right-angle pipe
• 90-degree turn
• Construction add-on