TUMPLINE Meaning of TUMPLINE in English [ 'tʌmplʌɪn ]■ noun N. Amer. a sling for carrying a load on the back, with a strap passing round the forehead.OriginC18: based on Algonquian (mat)tump + line 1 . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004