DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   main
       adj 1: most important element; "the chief aim of living"; "the
              main doors were of solid glass"; "the principal rivers of
              America"; "the principal example"; "policemen were
              primary targets"; "the master bedroom"; "a master switch"
              [syn: chief(a), main(a), primary(a),
              principal(a), master(a)]
       2: (of a clause) capable of standing syntactically alone as a
          complete sentence; "the main (or independent) clause in a
          complex sentence has at least a subject and a verb" [syn:
          independent, main(a)] [ant: dependent, subordinate]
       3: of force; of the greatest possible intensity; "by main
          strength"
       n 1: any very large body of (salt) water [syn: main, briny]
       2: a principal pipe in a system that distributes water or gas or
          electricity or that collects sewage