an open square area that has buildings all around it, especially in a school or college 四方院子（四周有建筑的开放场地，常见于校园） It has a large central quadrangle entered from the south side. 那里中央有一个四方大院子，入口在南边。
Word Originlate Middle English: from Old French, or from late Latin quadrangulum ‘square’, neuter of quadrangulus, from Latin quadri- ‘four’ + angulus ‘corner, angle’.