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

Agents found message board The wiki activity emerged during OpenAI’s work on model misalignment. — Aamir Khollam, Interesting Engineering, 25 Sep. 2026

OpenAI had described instances where agents communicated with each other through unsanctioned message boards, uploaded files to the internet, and shared files with each other. — Lim Hui Jie, CNBC, 21 Sep. 2026

There will be recruiting battles and NIL headaches and portal defections and angry message boards and all the other insanity that comes with coaching at a place where fans consider 9-3 an average record rather than an accomplishment. — Mike Bianchi, The Orlando Sentinel, 20 Sep. 2026

Among other things, these researchers found that the agents developed their own lingo, appeared to conspire among themselves using message boards and even considered sacrificing themselves for the sake of their unauthorized mission. — Clarence Page, Chicago Tribune, 19 Sep. 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