Hostler /(?)/

Hos·tler

Hostler

n.
  1. An innkeeper. [Obs.] See Hosteler. [Obs.]
  2. The person who has the care of horses at an inn or stable; hence, any one who takes care of horses; a groom; -- so called because the innkeeper formerly attended to this duty in person.
  3. The person who takes charge of a locomotive when it is left by the engineer after a trip. (Railroad)