Short answer:
A free chip is a small bonus amount you can play with before depositing.
Long answer:
Free chips usually come as $20, $25, $50, or even $100 credits depending on the casino. You can use them on selected games and keep the winnings after meeting the wagering requirement. They’re perfect for players who want to test the withdrawal process before risking real money. Keep in mind that casinos usually put a cashout limit on free-chip wins.