What is the meaning of hopeful?

noun

• An ambitious and aspiring young person.
  • usage: "a lofty aspirant"; "two executive hopefuls joined the firm"; "the audience was full of Madonna wannabes"
  • synonyms: aspirant, aspirer, wannabe, wannabee

adjective

• Having or manifesting hope.
  • usage: "a line of people hopeful of obtaining tickets"; "found a hopeful way of attacking the problem"
• Full or promise.
  • usage: "had a bright future in publishing"; "the scandal threatened an abrupt end to a promising political career"; "a hopeful new singer on Broadway"
  • synonyms: bright, promising