First Known Use: 14th century
Dictionary
crupper
noun crup·per \ˈkrə-pər, ˈkru̇-\
Definition of CRUPPER
1
: a leather loop passing under a horse's tail and buckled to the saddle
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Origin of CRUPPER
Middle English cruper, from Anglo-French crupere, from crupe, croupe hindquarters — more at croup
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