Related Clues:

• Put in some chips, say
• Indicated 'I'm in!'
• Paid for hand delivery?
• Threw in a chip, say
• Paid to play a hand
• Chose to join
• Entered a poker game
• Put in an opening stake
• Threw in a chip
• Paid for a poker hand
• Ponied up, in poker
• Paid for a five-card hand
• Tossed in a chip, say
• Bought into a poker game
• Bought in