hostler

noun2

1. •
   A worker employed at an inn, hostelry, or stable to look after horses.

   • As the chaise drove through Clavering, the hostler standing whistling under the archway of the Clavering Arms, winked the postilion ominously, as much as to say all was over. — 1848
2. •
   (US) A railway worker employed to care for a locomotive or other large engine; especially, a yard jockey.

   • The employees contend that inasmuch as there are seven engines hostled at Sleepy Eye within a 12-hour period, a hostler from the ranks of the firemen must be assigned […] — 1924