Meanings
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1
noun
historical: a horse, mule, or other pack animal used to carry loads
The expedition relied on a sumpter to carry food and tools across the pass.
Thesaurus
Etymology
From Middle English sompter, shortened from sompter hors, through Anglo-French from a Late Latin word for a pack-animal driver. The Latin line ultimately goes back to Greek sagma, meaning a pack saddle or load.