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

But the new report notes that the AI agents spent considerably more time on this message board discussing those cybersecurity challenges that were extremely difficult, suggesting the agents had a high motivation to solve them. — Emily Forlini, Fortune, 26 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

Roadside message boards and signage will alert drivers of the closures in advance, the Georgia Department of Transportation said. — Kimberly Wright, AJC.com, 21 Aug. 2026

Matt Black and Ryan Polly direct the story of a demonic entity that stalks message board moderators. — Pat Saperstein, Variety, 17 Aug. 2026

Word History

First Known Use

1795, in the meaning defined at sense 1

Rhymes for message board

• particleboard
• phonorecord
• underinsured
• abhorred
• aboard
• accord
• adored
• afford
• award
• baseboard
• billboard
• blackboard

Kids Definition

message board

noun

: bulletin board sense 2