A faucet website gives out Bitcoin or other Cryptocurrency for free in exchanging for a simple task for example: watching and AD video or reviewing a sites.
They will pay out a very small amount of bitcoin or other cryptocurrency
They usually pay out in small amount called Satoshis which are equivalent to a millionth of a bitcoin
A
Satoshiis a smallest unit of a bitcoin: 0.0000001 BTC
Their business model focused on advertisement revenue
There is a certain Time limit/waiting period when it comes to withdrawal in order to prevent Bots and spammers