Source : Webster's Revised Unabridged Dictionary (1913)

Pinguicula \Pin*guic"u*la\, n. [NL., fr. L. pinguiculus somewhat
   fat, fattish.] (Bot.)
   See {Butterwort}.

Butterwort \But"ter*wort`\, n. (Bot.)
   A genus of low herbs ({Pinguicula}) having simple leaves
   which secrete from their glandular upper surface a viscid
   fluid, to which insects adhere, after which the margin
   infolds and the insects are digested by the plant. The
   species are found mostly in the North Temperate zone.

Source : WordNet®

Pinguicula
     n : butterworts: a large genus of almost stemless carnivorous
         bog plants; Europe and America to Antarctica [syn: {genus
         Pinguicula}]