1. plural of chalkboard; dark surfaces, typically green or black, used for writing or drawing with chalk in classrooms

Examples

• The old school still uses chalkboards in most classrooms.
• Teachers wrote math problems on the chalkboards.
• The janitor cleaned all the chalkboards after school.
• Many schools have replaced chalkboards with whiteboards.
• Students could hear the chalk squeaking on the chalkboards.
• The chalkboards were covered with yesterday’s lessons.