Related Clues:

• Hit show inits.
• Bad pun response
• Letters of success
• 'Yow!'
• Bdwy. sellout sign
• 'No seats left' sign
• Welcome sign for a producer
• Exclamation of pain
• Hit sign
• 'No seats' (Abbr.)
• Packed-house letters
• Sign of a full house
• Pained cry
• Breaking capacity, briefly
• 'Ever hear of novocaine!?'