(n.) A lotion made by mixing calomel and lime water.
(n.) A wash that blackens, as opposed to whitewash; hence, figuratively, calumny.
Example Sentences:
(1) If Charlotte slagged off Austen - her only real rival in the canon of superb, sex-starved writers - what would she have made of Gaskell's blackwash?
Limewater
Definition:
(n.) Water impregnated with lime; esp., an artificial solution of lime for medicinal purposes.