ˈ(h)äslə(r) sometimes ˈhəs- noun
( -s )
Etymology: Middle English osteler, hosteler, hostler innkeeper, hostler — more at hosteler
1.
a. also os·tler ˈäs- : one who takes care of horses at an inn or stable : groom
b. : one who is in charge of the horses or mules used in an industry : stableman
2.
a. : one who takes charge of a railroad locomotive after a run : one who moves and services locomotives in enginehouse or roundhouse territory
b. : one employed in the storage garage of a transportation company to assist with the moving about and servicing of trucks or buses
c. : a worker who cleans, oils, or otherwise services machines (as cranes, dinkeys, boilers) that are in almost constant use