DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   deficit
       n 1: the property of being an amount by which something is less
            than expected or required; "new blood vessels bud out from
            the already dilated vascular bed to make up the nutritional
            deficit" [syn: deficit, shortage, shortfall]
       2: a deficiency or failure in neurological or mental
          functioning; "the people concerned have a deficit in verbal
          memory"; "they have serious linguistic deficits"
       3: (sports) the score by which a team or individual is losing
          [ant: lead]
       4: an excess of liabilities over assets (usually over a certain
          period); "last year there was a serious budgetary deficit"