quadrangle /ˈkwɒdraŋɡl 
/ ▸ noun 1 Geometry a four-sided plane figure, especially a square or rectangle. 2 a square or rectangular space or courtyard enclosed by buildings. – ORIGIN late Middle English: from Old French, or from late Latin quadrangulum ‘square’, neuter of quadrangulus, from Latin quadri- ‘four’ + angulus ‘corner, angle’.
EnglishOxford Dictionary of English
