Related Clues:

• Top of the Capitol
• Hemispherical roof
• It may be retractable
• ___ of the Rock (Jerusalem shrine)
• Fuller figure?
• Stadium roof, perhaps
• Igloo shape
• Cover of many a field
• Arena topper, perhaps
• Capitol's top
• Many a stadium cover
• Pate
• Capitol's cap
• Feature of some arenas
• Stadium cover, perhaps