Definitions
1.NounA sincere attempt; a determined or assiduous effort towards a specific goal; assiduous or persistent activity.
2.VerbTo exert oneself. .mw-parser-output .defdate{font-size:smaller}
3.VerbTo attempt through application of effort (to do something); to try strenuously.
4.VerbTo attempt (something).
5.VerbTo work with purpose.