n.
Pronunciation: ' häs-l ə r, ' äs-
Variant: also os · tler \ ' äs- \
Function: noun
Etymology: Middle English, innkeeper, hostler, from Anglo-French hosteler, from hostel
Date: 14th century
1 : one who takes care of horses or mules
2 : one who moves locomotives in and out of a roundhouse also : one who services locomotives