meaning of backboard
1. A board which supports the back wen one is sitting;
2. A board serving as the back part of anything, as of a wagon.
3. A thin stuff used for the backs of framed pictures, mirrors, etc.
4. A board attached to the rim of a water wheel to prevent the water from running off the floats or paddies into the interior of the wheel.
5. A board worn across the back to give erectness to the figure.
6. a board used to support the back of someone or something
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