A long flat slab of sawed lumber; a plank. A flat piece of wood or similarly rigid material adapted for a special use. Games A flat surface on which a game is played. The hard cover of a book. A theater stage. A table, especially one set for serving food. Food or meals considered as a whole: board and lodging. A table at which official meetings are held; a council table. An organized body of administrators or investigators: a board of trustees; a board of directors. An electrical-equipment panel. Computer Science A circuit board. Sports A scoreboard. Sports A tote board. Sports The wooden structure enclosing an ice hockey rink. Sports A diving board. Sports A surfboard. Sports A snowboard. Basketball A backboard. Basketball A rebound. Nautical The side of a ship. Nautical A leeboard. Nautical A centerboard. Obsolete A border or an edge. A usually large, vertically positioned flat surface used for writing or posting, especially: A blackboard.