/ ˈɒslə(r); NAmE ˈɑːs-/ ( NAmE also host·ler ) noun
(in the past) a man who took care of guests' horses at an inn
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WORD ORIGIN
late Middle English : from Old French hostelier innkeeper, from hostel , from medieval Latin hospitale , neuter of Latin hospitalis hospitable, from hospes , hospit- host, guest.