DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   concealed
       adj 1: not accessible to view; "concealed (or hidden) damage";
              "in stormy weather the stars are out of sight" [syn:
              concealed, hidden, out of sight]
       2: hidden on any grounds for any motive; "a concealed weapon";
          "a concealed compartment in his briefcase" [ant:
          unconcealed]