A crypto faucet is a website distributing small amounts of crypto for free. It’s a reference to leaky faucets constantly dripping droplets of water (the water being the analogy for the amounts of crypto “leaked” by the faucet)
Most faucets use a “micro-wallet” scheme to collect the rewards, so they don’t get eaten up by transaction fees. Dripping.website uses FaucetPay to do this. You need an account with them where you’ll attach one of your BCH address. This will be used to pool all the micro-transactions received without any fee. You will then be able to withdraw when you grew the amount enough.