Chalkboardnoun
A slate or enamel board for writing on with chalk; a predecessor to a whiteboard.
Chalkboardnoun
a dark sheet of slate used as a surface for writing on, with chalk.
Chalkboardnoun
sheet of slate; for writing with chalk
Chalkboardnoun
another term for blackboard
Blackboardnoun
A large flat surface, finished with black slate or a similar material, that can be written upon with chalk and subsequently erased; a chalkboard.
Blackboardverb
To use a blackboard to assist in an informal discussion.
Blackboardnoun
A broad board painted black, or any black surface on which writing, drawing, or the working of mathematical problems can be done with chalk or crayons. It is much used in schools. In late 20th century similar boards of a green slate as well as some colored white became common; wrioting on the slate bioards may be done with chalk, but writing on the white boards is done with colored pens, such as grease pens, which leaves a trace that can be easily erased. The newer boards, usualy called chalkboards are nevertheless still sometimes referred to as blackboards.
Blackboardnoun
sheet of slate; for writing with chalk
Blackboardnoun
a large board with a smooth dark surface attached to a wall or supported on an easel and used by teachers in schools for writing on with chalk.
Blackboard
A blackboard (also known as a chalkboard) is a reusable writing surface on which text or drawings are made with sticks of calcium sulphate or calcium carbonate, known, when used for this purpose, as chalk. Blackboards were originally made of smooth, thin sheets of black or dark grey slate stone.