Definitions
1.AdjectiveBeyond what is due, usual, expected, or necessary; extraneous; additional; supernumerary."I don't mind doing some extra work, as long as I get extra pay."
2.AdjectiveExtraordinarily good; superior.
3.AdjectiveOver the top; going beyond what is normal or appropriate, often in a dramatic manner."You unfollowed her for posting cat memes? You're so extra!"
4.AdverbTo an extraordinary degree."That day he ran to school extra fast."
5.NounSomething additional, such as an item above and beyond the ordinary school curriculum, or added to the usual charge on a bill.
6.NounAn extra edition of a newspaper, which is printed outside of the normal printing cycle, for example to report an important late-breaking event."Extra, extra! Read all about it!"
7.NounA run scored without the ball having hit the striker's bat - a wide, bye, leg bye or no ball.
8.NounA supernumerary or walk-on in a film or play.
9.NounThe state or trait of being over the top, of behaving in an overly dramatic manner."Stop! I can't deal with all your extra today!"
10.NounSomething of an extra quality or grade. (Can we add an example for this sense?)
11.NounA day of extra duties (often, over the weekends), as a form of punishment.