noun
bulletin board; notice board; display board
A physical board for posting notices, announcements, or advertisements in public spaces, offices, or schools.
駅の掲示板に新しいポスターが貼ってあった。
A new poster was put up on the bulletin board at the station.
noun
electronic bulletin board; BBS; online forum
An online system where users can post messages and replies; often used for early internet forums or text-based discussion boards.
See also: 電子掲示板
昔はインターネットの掲示板でよく議論したものだ。
Back in the day, we used to have discussions on internet bulletin boards.