brass-rubbing

[ bras-ruhb-ing, brahs- ]
/ ˈbræsˌrʌb ɪŋ, ˈbrɑs- /

noun

an antiquarian's technique for copying designs from incised brass memorial slabs and the like.
a copy made by brass-rubbing. Compare rubbing(def 2).

Origin of brass-rubbing

First recorded in 1885–90