Classroom (noun)

1. A room in a school or other educational institution where classes are held.
2. The space or area where classes are held in a school, college, or university.

Origin:

Class + room.

Examples:

1. He walked into the classroom and took his seat.
2. She spent her days in the classroom teaching young students.
3. The classroom was equipped with a whiteboard, projector, and tables.
4. The classroom was filled with the noise of students talking and laughing.
5. The classroom was empty as the students had gone home for the day.