[1] : The Collaborative International Dictionary of English v.0.48

mainland \main"land`\, n.
   the continent; the principal land; -- opposed to island, or
   peninsula. --dryden.
   1913 webster

         after the two wayfarers had crossed from the peninsula
         to the mainland.                         --hawthorne.
   1913 webster
see also:
island peninsula 

[2] : WordNet (r) 2.0

mainland
     n : the main land mass of a country or continent; as
         distinguished from an island or peninsula

Mainland >> M Words
Mainland, definition of term: Mainland
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