Room (noun)

1. An area within a building enclosed by walls, floor, and ceiling: a room for rent.
2. Space for a particular purpose: a waiting room.
3. An opportunity or possibility: there is room for improvement.
4. The people present in a particular place: the whole room was laughing.
5. The area or space available for a particular purpose: the room for expansion of the business.

Origin:

Old english rūm "space, room", of germanic origin; related to dutch ruim and german raum.

Examples:

1. He rented a room in the building.
2. They waited in the waiting room.
3. There is room for improvement in the design.
4. The whole room was laughing at the comedian's jokes.
5. The company has room for expansion in the market.