vaccina

from WordNet (r) 3.0 (2006)

vaccina
    n 1: a local infection induced in humans by inoculation with the
         virus causing cowpox in order to confer resistance to
         smallpox; normally lasts three weeks and leaves a pitted
         scar [syn: {vaccinia}, {vaccina}, {variola vaccine},
         {variola vaccinia}, {variola vaccina}]

from The Collaborative International Dictionary of English v.0.48

Vaccina \Vac*ci"na\, n. [NL.] (Med.)
   Vaccinia.
   [1913 Webster]