Meaning

noun someone employed in a stable to take care of the horses

originFrom Middle English hostiler, from Middle French hostiler, from Old French hostelier, from Medieval Latin hostilārius, hospitālārius, from hospitāle "inn", from hospitālis "hospitable", from hospes "host, guest". Both hostler and its alternative form ostler originally meant simply "innkeeper", and acquired a specific association with horses in the second half of the 14th century. Doublet of…

Etymology from Wiktionary, CC BY-SA 3.0