DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   lieu
       n 1: the post or function properly or customarily occupied or
            served by another; "can you go in my stead?"; "took his
            place"; "in lieu of" [syn: stead, position, place,
            lieu]