According to Dictionary dot com:
1. the favorable or prosperous termination of attempts or endeavors.
For example: My daughter’s 16th birthday party was a big success.
2. the attainment of wealth, position, honors, or the like.
For example: I succeeded in being admitted to the creative writing concentration at my college.
3. a successful performance or achievement: The play was an instant success.
For example: My attempts at DDR Max at my 16 year old birthday party was not a success; however, being cheered on by a roomful of teenagers was.
4. a person or thing that is successful.
For example: My son was a big success at DDR Max (and did not rub it in his mother’s face).