DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   look out
       v 1: be vigilant, be on the lookout or be careful; "Watch out
            for pickpockets!" [syn: watch, look out, watch out]
       2: to protect someone's interests; "A man's gotta look out for
          his family"