Etymology: Middle English bord piece of sawed lumber, border, ship's side, from Old English; akin to Old High German bort ship's side
Date: before 12th century
1obsolete:border, edge 2: the side of a ship 3 a: a piece of sawed lumber of little thickness and a length greatly exceeding its width bplural:stage 2a(2) cplural:skis 4 aarchaic:table 3a b: a table spread with a meal c: daily meals especially when furnished for pay d: a table at which a council or magistrates sit e (1): a group of persons having managerial, supervisory, investigatory, or advisory powers <board of directors><board of examiners>(2): an examination given by an examining board —often used in plural <pass the medical boards>f:league, associationg (1): the exposed hands of all the players in a stud poker game (2): an exposed dummy hand in bridge 5 a: a flat usually rectangular piece of material (as wood) designed for a special purpose: as (1):springboard 1 (2):surfboardb:backboard 1; also: a rebound in basketball c: a surface, frame, or device for posting notices d:blackboarde:switchboard 6 a:cardboardb: the stiff foundation piece for the side of a book cover 7: a securities or commodities exchange 8plural: the low wooden wall enclosing a hockey rink 9: a sheet of insulating material carrying circuit elements and terminals so that it can be inserted in an electronic apparatus (as a computer) 10:bulletin board 2
— board·like\-ˌlīk\adjective
— across the board: so as to include or affect all classes or categories <cut spending across the board>; also: in all areas or respects <considered an average player across the board>
— on board1:aboard 2: in support of a particular objective <needed to get more senators on board for the bill to pass>