Definition of message board
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
