Related Clues:

• 'Join the ___'
• Word with night or bridge
• Social group
• Black card
• Troglodytic tool
• Organization in 23-Down
• Coterie
• Society
• Driver, for one
• Troglodytic weapon
• Triple-decker sandwich
• Word with yacht or kennel
• Iron, e.g.
• Golfer's hangout
• Nightspot