DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   invert
       v 1: make an inversion (in a musical composition); "here the
            theme is inverted"
       2: reverse the position, order, relation, or condition of; "when
          forming a question, invert the subject and the verb" [syn:
          invert, reverse]
       3: turn inside out or upside down [syn: turn back, invert,
          reverse]