What is the meaning of struggle?

noun

• An energetic attempt to achieve something.
  • usage: "getting through the crowd was a real struggle"; "he fought a battle for recognition"
  • synonyms: battle
• An open clash between two opposing groups (or individuals. )
  • usage: "the harder the conflict the more glorious the triumph-Thomas Paine; "police tried to control the battle between the pro- and anti-abortion mobs"
  • synonyms: conflict, battle
• Strenuous effort.
  • usage: "the struggle to get through the crowd exhausted her"

verb

• Make a strenuous or labored effort.
  • usage: "She struggled for years to survive without welfare"; "He fought for breath"
  • synonyms: fight
• To exert strenuous effort against opposition.
  • usage: "he struggled to get free from the rope"
• Climb awkwardly, as if by scrambling.
  • synonyms: clamber, scramble, shin, shinny, skin, sputter
• Be engaged in a fight; carry on a fight.
  • usage: "the tribesmen fought each other"; "Siblings are always fighting"; "Militant groups are contending for control of the country"
  • synonyms: contend, fight