WordNet (r) 3.0 (2006):

leper lily
    n 1: Eurasian checkered lily with pendant flowers usually veined
         and checkered with purple or maroon on a pale ground and
         shaped like the bells carried by lepers in medieval times;
         widely grown as an ornamental [syn: snake's head
         fritillary, guinea-hen flower, checkered daffodil,
         leper lily, Fritillaria meleagris]