classroom

UK: ˈklɑːsruːm | US: ˈklæsruːm

Definition
  1. n. a room in a school or college where classes are held

Structure
class <group of students>room <enclosed space>
Etymology

The word "classroom" is a straightforward compound of "class" (derived from Latin classis, meaning "a division or group") and "room" (from Old English rūm, meaning "space"). It emerged in the early 19th century to describe a dedicated space for teaching and learning, reflecting the institutionalization of education. The logic is transparent: a "room" for a "class."

Examples
  1. The students quietly entered the classroom.

  2. The teacher decorated the classroom with colorful posters.

  3. Our classroom has large windows that let in plenty of light.

  4. The principal announced a new rule for all classrooms.

  5. She left her backpack in the classroom by mistake.