What is the meaning of defeat?

noun

• An unsuccessful ending to a struggle or contest.
  • usage: "it was a narrow defeat"; "the army's only defeat"; "they suffered a convincing licking"
  • synonyms: licking
• The feeling that accompanies an experience of being thwarted in attaining your goals.
  • synonyms: frustration

verb

• Win a victory over.
  • usage: "You must overcome all difficulties"; "defeat your enemies"; "He overcame his shyness"; "He overcame his infirmity"; "Her anger got the better of her and she blew up"
  • synonyms: get the better of, overcome
• Thwart the passage of.
  • usage: "kill a motion"; "he shot down the student's proposal"
  • synonyms: kill, shoot down, vote down, vote out