A faucet is a website or application that distributes small amounts of digital currency to users at regular intervals. The term "faucet" is derived from the concept of a water faucet, as it metaphorically refers to a source that provides a steady stream of free cryptocurrency.

Faucets are often used as a promotional tool by cryptocurrency projects to introduce and attract users to their digital currency. They typically offer a small amount of the cryptocurrency for completing simple tasks, such as solving captchas or watching advertisements. The purpose of faucets is to give users a taste of the cryptocurrency and create engagement with the project.

While the amounts given by faucets are typically very small, over time they can accumulate and provide users with enough cryptocurrency to experiment with or start their own transactions. Faucets also serve as educational tools, allowing users to learn about the mechanics of cryptocurrencies and how transactions work in a practical setting.

It's important to note that faucets are not a significant source of income and should not be relied upon as a sustainable means of acquiring cryptocurrency.