Found in the following dictionaries
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
OTCWL2014 (NASPA Word List 2014)
"Whiteboard" Definition
noun
A panel covered with white, glossy plastic for writing on with erasable markers.
Source: American Heritage Dictionary
A large vertical writing area, finished with a hard white material, which can be written upon using special markers and subsequently erased.
Source: Wiktionary
A hard smooth surface used for writing or drawing on with markers.
Source: Merriam-Webster
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