What does BOARD mean?

noun

1. a committee having supervisory powers“the board has seven members”
2. a stout length of sawn timber; made in a wide variety of sizes and used for many purposes
3. a flat piece of material designed for a special purpose“he nailed boards across the windows”
4. food or meals in general“she sets a fine table”
5. a vertical surface on which information can be displayed to public view
6. a table at which meals are served“he helped her clear the dining table”
7. electrical device consisting of a flat insulated surface that contains switches and dials and meters for controlling other electrical devices“he checked the instrument panel”
8. a printed circuit that can be inserted into expansion slots in a computer to increase the computer's capabilities