Other forms: whiteboards
A whiteboard is the big white surface the teacher writes on with markers. Write it on the whiteboard, clean the whiteboard, an interactive whiteboard.
It replaced the blackboard because chalk dust ruined electronics and lungs alike. The interactive kind is a projector and a touch surface together, and in most schools it is used as an expensive ordinary whiteboard.
1nounwhiteboardThe big white surface the teacher writes on with markers.
“The teacher wrote the new words on the whiteboard in green marker.”
whiteboard is a board.
Also accepted in games: blackboard, board
White plus board, modelled directly on blackboard.
From white + board, modelled on blackboard.
Etymology from Wiktionary, CC BY-SA