message board

noun

1
: a board or sign on which messages or notices are displayed
an electronic message board
2
: a public electronic forum that allows users to post or read messages or to post or download files and that is accessed by computer over a network (such as the Internet)
Even as bullpen problems loom …, they haven't spawned the typical degree of urgency and panic on Internet message boards and sports radio shows.—Bill Simmons

Examples of message board in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Around 1,200 agents overall exchanged more than 70,000 messages and files through an unauthorized message board, coordinating ways to game a hacking evaluation. — Beatrice Nolan, Fortune, 27 Aug. 2026 Cheaters gonna cheat The first step was creating a message board that allowed the agents to pass notes to each other. — Dan Goodin, ArsTechnica, 27 Aug. 2026 In a recent presentation, OpenAI researchers described how AI agents used a covert message board to plan their next moves. — Alex Heath, Time, 26 Aug. 2026 On Blind, an anonymized but verified message board for tech industry professionals, numerous Microsoft insiders groused that their compensation doesn’t match their contributions to the company. — Joe Wilkins, Futurism, 26 Aug. 2026 See All Example Sentences for message board

Word History

First Known Use

1795, in the meaning defined at sense 1

Time Traveler
The first known use of message board was in 1795

Rhymes for message board

See All Rhymes for message board

Browse Nearby Words

message
message board
message stick
See all Nearby Words

Cite this Entry

“Message board.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/message%20board. Accessed 4 Sep. 2026.

Copy Citation

Kids Definition

message board

noun
: bulletin board sense 2
Last Updated: - Updated example sentences
Love words? Need even more definitions?

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

More from Merriam-Webster

Word of the Day

Listen to the pronunciation of apiary

See Definitions and Examples »

Popular in Grammar & Usage

See More

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

A List of Most Commonly Confused Words

Why do we use apostrophes to show possession?

Is it 'nerve-racking' or 'nerve-wracking'?

What's the difference between 'fascism' and 'socialism'?
See More

Popular in Wordplay

See More

The Longest Long Words List

Stay Woke

Ye Olde Nincompoop: Old-Fashioned Words for 'Stupid'

14 Phobias You Probably Haven't Heard Of

The Words of the Week - Sept. 4
See More

Popular

See More

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

The Longest Long Words List

Stay Woke
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
anagrams on a chalk board
Word Builder Quiz Vol. 2 Pick the letter that when added to a word will ma...
See All