Definitionen
1.NounA board placed temporarily upon a dam, river, stream, etc. (typically within a permanent frame) to raise the water above its usual level.
2.NounA board that controls the flow of any material.
3.NounA sheet of material that is subjected to an electric pulse or flashover in order to produce plasma.
4.NounAny automated display that shows temporary information.
An electronic display that shows the winning values in various gambling games such as keno or bingo.
5.NounAn electronic display that shows the winning values in various gambling games such as keno or bingo.
6.NounAn acrylic board used to display children's work in a school.
7.NounA board for displaying language material in the classroom, used like a flashcard but potentially holding more information.
8.NounA device used in the 1920s for teaching typing skills which provided feedback on which key was pressed by lighting up the corresponding value.