FURRING • DICTIONARY ONE.COM • Definition of Furring

... said to be temporarily or permanently hard according to the kind of lime it has in solution. Temporarily hard water may be softened by boiling; the lime will be deposited, as may be seen in the "furring" of tea-kettles. Boiling has no effect in softening permanently hard water, so a substance known as an alkali is used for ...

— Ontario Teachers' Manuals: Household Management • Ministry of Education

... receptacles for dust on their tops. This may be avoided by carrying them clear up to the ceiling. When this is not done, their tops should be sheeted over flush with the highest line of their cornices, so that there may be no sunken lodging-place for dust. Furring spaces between the furring and the outer walls should be stopped off at each floor line with brick and mortar "fire stops;" and the same with hollow interior partition walls. Soil pipes should never have "T" branches; ...

— Burroughs' Encyclopaedia of Astounding Facts and Useful Information, 1889 • Barkham Burroughs