SUMPTER Meaning of SUMPTER in English [ 'sʌm(p)tə ]■ noun archaic a pack animal.OriginME: from OFr. sommetier , via late L. from Gk sagma , sagmat- 'packsaddle'; cf. summer 2 . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004