The Collaborative International Dictionary of English v.0.48:

Measle \Mea"sle\, n. [OE. mesel, OF. mesel, LL. misellus, L.
   misellus unfortunate, dim. of miser. See Miser.]
   A leper. [Obs.] [Written also meazel, and mesel.]
   --Wyclif (Matt. x. 8. ).
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Measle \Mea"sle\, n. (Zool.)
   A tapeworm larva. See 2d Measles, 4.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Cysticerce \Cys"ti*cerce\ (s?s"t?-s?rs), Cysticercus
\Cys`ti*cer"cus\ (-s?r"k?s), n. [NL. cysticercus, fr. Gr. ????
   bladder + ke`rkos tail: cf. F. cysticerque.] (Zool.)
   The larval form of a tapeworm, having the head and neck of a
   tapeworm attached to a saclike body filled with fluid; --
   called also bladder worm, hydatid, and measle (as, pork
   measle).
   [1913 Webster]

   Note: These larvae live in the tissues of various living
         animals, and, when swallowed by a suitable carnivorous
         animal, develop into adult tapeworms in the intestine.
         See Measles, 4, Tapeworm.
         [1913 Webster]