Storeroom (noun)

A room or a space used for storing things, such as supplies, equipment, or inventory.

Origin:

Compound word, made up of "store" meaning a place to keep things, and "room" meaning a space for a particular purpose. first recorded use of the word in this form was in 1633.

Examples:

1. We will have to go to the storeroom to get more chairs.
2. The storeroom is located in the basement of the building.
3. I have to go to the storeroom to get more packing materials.
4. She was looking for a specific book in the storeroom.
5. The storeroom was full of old furniture and boxes.