ALL meanings of flashboard
flash·board
F f - noun flashboard a board, or one of a series of boards, as on a milldam, used to increase the depth of the impounded water. 1
- noun flashboard A board used for increasing the depth of water behind a dam. 1
- noun flashboard a board or boarding that is placed along the top of a dam to increase its height and capacity 0
- noun flashboard a board or boards placed at the top of a dam to increase the depth or force of the stream 0
- noun flashboard (US) A board placed temporarily upon a milldam, to raise the water in the pond above its usual level. 0