Warder (noun)

1. A person who is employed to guard or keep watch over something.
2. A person who is in charge of a prison or jail cell block.

Origin:

The word "warder" has been in use since the 14th century and comes from the old english word "weard" meaning "guard or watchman". it is derived from the germanic base "war-", meaning "to be aware of" and "-ard" meaning "one who does".

Examples:

1. The warder at the castle gate checked our tickets before allowing us to enter.
2. The prison warder was responsible for the safety and security of the inmates.
3. The warder patrolled the castle walls, watching for any sign of danger.
4. The warder at the zoo was tasked with making sure that the animals were safe and well-cared for.
5. The warder's duty was to keep watch over the prisoners and prevent escapes.