- girder⇄bowstring truss orgirder
a truss in which a curved beam is held together by a horizontal tie attached to the ends of the beam. - girder⇄girder (1), noun.
a main supporting beam, made of steel, concrete, or wood. The weight of a floor is usually supported by girders. A tall building or big bridge often has steel girders for its frame. - girder⇄girder (2), noun.
a person who girds or gibes.