Broadly used for various types of boards, including notice boards, whiteboards, bulletin boards, and surfboards. The specific meaning depends on context.
The teacher wrote today's schedule on the board.
I wrote the schedule on the whiteboard in the meeting room.
A new notice is posted on the bulletin board.
I posted the notice on the board.
counter for thin, flat objects; sheet; plate; coin · serving of soba; portion of gyōza · sumo rank position; wrestler at a given rank · field; rice paddy plot · palanquin bearer
Loanword from English 'board'.
kick scooter; push scooter
corkboard; pinboard
sideboard
signboard
surfboard
skimboard