Related Clues:

• Tuxedo shirt fastener
• 50-50, e.g.
• Formal wear
• Attach
• Poker variation
• Ring around the collar?
• Wall board
• Track supporter
• Wall support
• Unsatisfying game result
• Collar fastener
• Casual Friday castoff
• 7 up, e.g.
• Obligation
• Why you're still there after four quarters