A Quick and Simple Dictionary

main

1. Proper noun.  A river in southern Germany, flowing from Bavaria to the Rhine.
2. Adjective.  Principal, most important. (defdate, from 15th c.) .
3. Adjective.  Sheer (of strength, force etc.). (defdate, from 16th c.) .
4. Adverb.  (British, dialectal) Very; very much; greatly; mightily; extremely; exceedingly.
5. Noun.  (obsolete, except in might and main) Strength; power; force; violent effort. (defdate, from 9th c.) .
6. Noun.  That which is chief or principal; the chief or main portion; the gross; the bulk; the greater part.
7. Noun.  (context, now) The mainland. (defdate, from 16th c.) .
8. Noun.  (context, now) The high seas. (defdate, from 16th c.) .
9. Noun.  A large pipe or cable providing utility service to a building or area, such as water main or electric main. (defdate, from 17th c.) .
10. Noun.  (nautical) The mainsail. (defdate, from 17th c.) .