a long strong iron or steel bar used for building bridges and the framework of large buildings (橋或建築物的)梁,主梁,桁架 It was a confusing picture of pipes and girders. 這是一幅管道和大梁的混亂畫面。 The unfinished building with its blue girders was being used as a huge climbing frame. 這座未完工的大樓有藍色的大梁,當時正被人們當作遊樂用的大型攀爬架。
Word Originearly 17th cent.: from gird in the archaic sense ‘brace, strengthen’.