OSTLER Meaning of OSTLER in English [ 'ɒslə ](also h~ ) ■ noun historical a man employed to look after the horses of people staying at an inn.OriginME: from OFr. hostelier 'innkeeper', from hostel (see hostel ). Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004