The Collaborative International Dictionary of English v.0.48:

calceolaria \cal`ce*o*la"ri*a\
   (k[a^]l`s[-e]*[-o]*l[=a]"r[i^]*[.a]), n. [NL., fr. L.
   calceolarius shoemaker, fr. calceolus, a dim. of calceus
   shoe.] (Bot.)
   A genus of showy herbaceous or shrubby plants, brought from
   South America; slipperwort. It has a yellow or purple flower,
   often spotted or striped, the shape of which suggests its
   name.
   [1913 Webster]

WordNet (r) 3.0 (2006):

calceolaria
    n 1: any garden plant of the genus Calceolaria having flowers
         with large inflated slipper-shaped lower lip [syn:
         calceolaria, slipperwort]