A smooth hard panel, usually green or black, for writing on with chalk; a blackboard.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "chalkboard" in a sentence
"As they leave for the runway, a chalkboard is visible on which someone has written "TMV.""
"So imagine your favorite die in chalkboard vinyl for your wall ..."
"So a large group of the students have to sit with their backs to the board, and it's not like the chalkboard is in the center of that area ... it's off to one side, the far side, closest to the door."