Definitions

1. noun

a smooth white surface, especially of slate or chalkboard, on which marks can be made with chalk or a marker

“The teacher wrote on the blackboard and explained the math problem to the class.”

2. verb

to write or draw on a blackboard

“She blackboarded the notes for the lecture on the classroom board.”

3. verb (transitive)

to cover or mark with blackboard marks, especially in a careless or hasty manner

“He blackboarded the walls with his reckless drawings.”