PENUMBRA n.
The shadow cast, in an eclipse, where the light is partly, but not wholly, cut off by the intervening body; the space of partial illumination between the umbra, or perfect shadow, on all sides, and the full light. Sir I. Newton.
PICKLE n.
lphuric or nitric acid, etc., to remove burnt sand, scale rust, etc., from the surface of castings, or other articles of metal, or to brighten them or improve their color.
PIECE n.
A castle; a fortified building. [Obs.] Spenser. Of a piece, of the same sort, as if taken from the same whole; like; -- sometimes followed by with. Dryden. -- Piece of eight, the Spanish piaster, formerly divided into eight reals. -- To give a piece of one's mind to, to speak plainly, bluntly, or severely to (another…
PLASTER n.
king ornaments, figures, moldings, etc.; or calcined gypsum used as a fertilizer. Plaster cast, a copy of an object obtained by pouring plaster of Paris mixed with water into a mold. -- Plaster of Paris. Etym: [So called because originally brought from a suburb of Paris.] (Chem.) Anhydrous calcium sulphate, or calcine…