POST-CHAISE Meaning of POST-CHAISE in English [ 'pəʊs(t)ʃeɪz ]■ noun ( plural ~s pronunciation same) historical a horse-drawn carriage used for transporting passengers or mail.OriginC17: from post 2 + chaise . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004