Possible Clues:

• Came across a road to openly greet old maid
• Poker or whist, say
• Uno, e.g
• Twenty-one, for one
• Poker or bridge, say
• Jack T. Ennis is 21, for instance
• Gin, for one
• Gin, e.g
• 'Poker, for one (4,4)'
• Gin or bridge, e.g