DuckCorp Dico

Found one definition

1.                 From The Jargon File (version 4.4.7, 29 Dec 2003):
                   
   
   
                   
                     
   loser
    n.
       An unexpectedly bad situation, program, programmer, or person. Someone who
       habitually loses. (Even winners can lose occasionally.) Someone who knows
       not and knows not that he knows not. Emphatic forms are real loser, total
       loser, and complete loser (but not **moby loser, which would be a
       contradiction in terms). See luser.