Noun

1. Earnest and conscientious activity intended to do or accomplish something

Verb

1. Make an effort or attempt
2. Put to the test, as for its quality, or give experimental use to
3. Put on trial or hear a case and sit as the judge at the trial of
4. Take a sample of
5. Examine or hear (evidence or a case) by judicial process
6. Give pain or trouble to
7. Test the limits of
8. Melt (fat or lard) in order to separate out impurities
9. Put on a garment in order to see whether it fits and looks nice