febrifuge

from WordNet (r) 3.0 (2006)

febrifuge
    n 1: any medicine that lowers body temperature to prevent or
         alleviate fever [syn: {antipyretic}, {febrifuge}]

from The Collaborative International Dictionary of English v.0.48

Febrifuge \Feb"ri*fuge\, n. [L. febris fever + fugare to put to
   flight, from fugere to flee: cf. F. f['e]brifuge. see
   {Febrile}, {Feverfew}.] (Med.)
   A medicine serving to mitigate or remove fever. -- a.
   Antifebrile.
   [1913 Webster]