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flashboard

American

[flash-bawrd, -bohrd] / ˈflæʃˌbɔrd, -ˌboʊrd /

noun

Civil Engineering.

a board, or one of a series of boards, as on a milldam, used to increase the depth of the impounded water.

flashboard British

/ ˈflæʃˌbɔːd /

noun

Also called: stop log. stop plank. a board or boarding that is placed along the top of a dam to increase its height and capacity

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of flashboard

First recorded in 1760–70; flash + board

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A two-foot "flashboard" was being added to the 31�-ft. levee and flood wall at Omaha.

From Time Magazine Archive

Thus meditating he drew nearer to the place where the flashboard was down and the water poured into the rocky river bed.

From Navy Boys Behind the Big Guns Sinking the German U-Boats by Owen, R. Emmett (Robert Emmett)

The water poured over the flashboard with a splashing murmur at that distance, and ran down under the bridge in a rocky bed.

From Navy Boys Behind the Big Guns Sinking the German U-Boats by Owen, R. Emmett (Robert Emmett)

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023