DuckCorp Dico

Found one definition

1.                 From The Collaborative International Dictionary of English v.0.48:
                   
   
   
                   
                     
   Suint \Su"int\ (s[=u]"[i^]nt), n. [F.] (Chem.)
      A peculiar substance obtained from the wool of sheep,
      consisting largely of potash mixed with fatty and earthy
      matters. It is used as a source of potash and also for the
      manufacture of gas.
      [1913 Webster]