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white·board [or] white board

whiteboard [or] white board

waIt bord
part of speech: noun
definition: a board, usually colored white, used as a writing surface in places such as classrooms and meeting rooms. Whiteboards are used in a way similar to blackboards, but they have a smooth, shiny surface that is designed to be written on with special markers and easily erased.
Our teacher likes to use colored markers when she writes on the whiteboard.