flash·​board | \ ˈflash-ˌbȯrd How to pronounce flashboard (audio) \

Definition of flashboard

: one or more boards projecting above the top of a dam to increase the depth of the water

Examples of flashboard in a Sentence

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 example sentences are selected automatically from various online news sources to reflect current usage of the word 'flashboard.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of flashboard

circa 1774, in the meaning defined above

Learn More About flashboard

Time Traveler for flashboard

Time Traveler

The first known use of flashboard was circa 1774

See more words from the same year

Dictionary Entries Near flashboard



flash boiler

See More Nearby Entries 

Statistics for flashboard

Cite this Entry

“Flashboard.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flashboard. Accessed 26 Nov. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon


Test Your Vocabulary

Name that Thing: Flower Edition

Name That Thing

Test your visual vocabulary with our 10-question challenge!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!