big

noun

1.
a person whose actions and opinions strongly influence the course of events
2.
an older sister
3.
grass yielding grain used for breakfast food and animal feed and in malt beverages
4.
a very large person; impressive in size or qualities
5.
the most important league in any sport (especially baseball)
6.
play in which children take the roles of father or mother or children and pretend to interact like adults