quadrangle

quadrangle
/ˈkwɔdræŋgl; `kwɑdræŋɡl/ n
1 plane figurewith four sides, esp a square or rectangle 四边形; （尤指）正方形, 长方形.
2 (fml 文) four-sided courtyard surrounded by large buildings, eg in an Oxford college （四周由大型建筑物围绕的）方形庭院（如於牛津大学学院的）.

牛津英汉双解词典