Wringer (noun)

1. A machine or device for wringing out wet clothes or other fabric.
2. A person or thing that causes great stress or difficulty.

Origin:

The word wringer is derived from the verb wring, which is derived from the old english word wringan, meaning "to twist" or "to squeeze".

Examples:

1. The wringer was a hand-crank machine used to squeeze the water out of clothes.
2. He used the wringer to get the excess water out of the mop.
3. The wringer was a common household appliance in the past.
4. The exam was a wringer, it was very difficult and stressful.
5. The negotiations were a wringer, they took a lot of time and effort.