COWPOX
cowpox, vaccinia
(noun) a viral disease of cattle causing a mild skin disease affecting the udder; formerly used to inoculate humans against smallpox
Source: WordNet® 3.1
Etymology
Noun
cowpox (usually uncountable, plural cowpoxes)
A pustular, eruptive skin disease of cattle caused by an Orthopoxvirus, with lesions occurring principally on the udder and teats. Human infection may occur from touching cows, and gives immunity to smallpox.
Synonyms
• kine-pox (archaic)
Source: Wiktionary
Cow"pox` (--pks`), n. (Med.)
Definition: A pustular eruptive disease of the cow, which, when
communicated to the human system, as by vaccination, protects from
the smallpox; vaccinia; -- called also kinepox, cowpock, and
kinepock. Dunglison.
Source: Webster’s Unabridged Dictionary 1913 Edition