Any of several medicinal preparations containing mercury and one or more oily substances, typically administered by injection in the treatment of syphilis.
Origin
Late 19th century. After scientific Latin oleum cinereum.
Definition of grey oil in US English:
grey oil
(USgray oil)
noun
historical
Any of several medicinal preparations containing mercury and one or more oily substances, typically administered by injection in the treatment of syphilis.
Origin
Late 19th century. After scientific Latin oleum cinereum.