DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   Popper
       n 1: British philosopher (born in Austria) who argued that
            scientific theories can never be proved to be true, but are
            tested by attempts to falsify them (1902-1994) [syn:
            Popper, Karl Popper, Sir Karl Raimund Popper]
       2: a container of stimulant drug (amyl nitrate or butyl nitrite)
       3: a container for cooking popcorn