Faucet (noun)

1. A device for controlling the flow of a liquid, especially water, from a pipe or container, typically by means of a handle or lever.
2. A tap or spout for a liquid, such as water or gas.

Origin:

From the middle english faucet, meaning "tap" or "spout".

Examples:

1. He turned on the faucet and washed his hands.
2. The faucet was leaking and needed to be replaced.
3. He opened the faucet and filled up the glass with water.
4. The faucet was hard to turn because it was old and rusty.
5. She checked the faucet to make sure it was completely closed before leaving the room.