Board  —n. 1 a flat thin piece of sawn timber, usu. Long and narrow. B material resembling this, of compressed fibres. C thin slab of wood etc. D thick stiff card used in bookbinding. 2 provision of regular meals, usu. With accommodation, for payment. 3 directors of a company; official administrative body. 4 (in pl.) Stage of a theatre. 5 side of a ship. —v. 1 go on board (a ship, train, etc.). 2 receive, or provide with, meals and usu. Lodging. 3 (usu. Foll. By up) cover with boards; seal or close.  go by the board be neglected or discarded. On board on or on to a ship, aircraft, oil rig, etc. Take on board consider, take notice of; accept. [old english]