CLAUSTRAL Meaning of CLAUSTRAL in English [ 'klɔ:str(ə)l ]■ adjective1》 relating to a cloister or religious house. 2》 literary enveloping; confining.OriginME: from late L. ~is , from L. claustrum (see cloister ). Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004