flash·​board ˈflash-ˌbȯrd How to pronounce flashboard (audio)
: one or more boards projecting above the top of a dam to increase the depth of the water

Example Sentences

Recent Examples on the Web During that week, engineers would also increase the height of the flashboard structure to 8 feet from 4 feet, replacing the plywood with metal. John D'anna, azcentral, 18 July 2019 On July 15, the lake level peaked, just inches from the top of the new 8-foot metal flashboards, and less than 7 feet from the top of the dam. John D'anna, azcentral, 18 July 2019

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'flashboard.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

circa 1774, in the meaning defined above

Time Traveler
The first known use of flashboard was circa 1774

Dictionary Entries Near flashboard

Cite this Entry

“Flashboard.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flashboard. Accessed 4 Jun. 2023.

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