(a) A piece of the elastic, absorbent, and porous spongin skeleton of various species of Porifera, a sponge; (b) the sponge as an instrument of the Passion, the sponge soaked with vinegar and gall……

Any of perh. several copper compounds occurring as rust on copper or brass, or obtained by subjecting copper or brass to the action of acetic acid, in most cases prob. a basic acetate of copper……

One or more kinds of resin or gum, or such held in solution and intended for use as a decorative or protective coating on wood or other material, varnish; ?also, varnish used as a vehicle or mordant……