Related Clues:

• 'No seats available'
• Box-office sign
• 'No seats left'
• Like some shows, for short
• Goose formation
• Churchillian sign
• Sign of a winner
• Appreciated Broadway letters
• Audience warning, briefly
• Theater sign (Abbr.)
• Formation for geese
• BO advisory
• 'All seats are taken' abbr.
• BO sign
• Sign outside a hit show