What is the meaning of the word "fair"?

Definitions:

a competitive exhibition of farm products noun
- I won a blue ribbon for my baking at the county fair.
a manuscript with few alterations or corrections adjective
- They incorporated the editor's suggestions and produced a fair copy.
free of clouds or rain adjective
- today will be fair and warm
gathering of producers to promote business noun
- world fair
in baseball, hit between the foul lines adjective
- I hit a fair ball over the third base bag.
in conformity with the rules or laws and without fraud or cheating adverb
- they played fairly
not excessive or extreme adjective
- a fairish income
of hair or skin, pale or light-colored adjective
- The child had a fair complexion.
without favoring one party, in a fair evenhanded manner adverb
- deal fairly with one another