gum ((n.)) DCHP-1 (pre-1967)
1 n.
a resinous substance exuded from certain evergreen trees, especially the spruce, as used for waterproofing the seams of birchbark canoes.
See also: birchbark canoe Indian pitch
2 n.
a rubber boot, reaching to just below the knee.
See also: gumboot (def. 1)