What is the meaning of exploit?

noun

• A notable achievement.
  • usage: "he performed a great feat"; "the book was her finest effort"
  • synonyms: feat, effort

verb

• Use or manipulate to one's advantage.
  • usage: "He exploit the new taxation system"; "She knows how to work the system"; "he works his parents for sympathy"
  • synonyms: work
• Draw from; make good use of.
  • usage: "we must exploit the resources we are given wisely"
  • synonyms: tap
• Work excessively hard.
  • usage: "he is exploiting the students"
  • synonyms: overwork