DCHP-1 Online
blister gum 
the gum of the Canada balsam.
See also: Canada balsam
- 1905 (1954) To cure a cough they boiled down spruce bark and mixed the liquor with . . . a turpentiny smelling liquor. The latter may have been the melted blister-gum that is found under the smooth bark of the balsam.
- 1905 (1954) To cure a cough they boiled down spruce bark and mixed the liquor with . . . a turpentiny smelling liquor. The latter may have been the melted blister-gum that is found under the smooth bark of the balsam.