DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   simmer
       n 1: temperature just below the boiling point; "the stew
            remained at a simmer for hours"
       v 1: boil slowly at low temperature; "simmer the sauce";
            "simmering water"