dome /dəum/ n. ［c］ 圆顶屋，穹顶: the dome of a church 教堂的圆顶；the dome of the sky 苍穹 the dome of St Paul's Cathedral圣保罗大教堂的穹顶 They formed the dome with the tree's branches.他们用树枝搭成圆屋顶。