The Collaborative International Dictionary of English v.0.48:

Lepra \Le"pra\ (l[=e]"pr[.a]), n. [L. See Leper.] (Med.)
   Leprosy.
   [1913 Webster]

   Note: The term lepra was formerly given to various skin
         diseases, the leprosy of modern authors being Lepra
         Arabum. See Leprosy.
         [1913 Webster]