What is the meaning of secure?

verb

• Get by special effort.
  • usage: "He procured extra cigarettes even though they were rationed"
  • synonyms: procure
• Cause to be firmly attached.
  • usage: "fasten the lock onto the door"; "she fixed her gaze on the man"
  • synonyms: fasten, fix
• Assure payment of.
• Make certain of.
  • usage: "This nest egg will ensure a nice retirement for us"; "Preparation will guarantee success"
  • synonyms: guarantee, ensure, insure, assure
• Fill or close tightly with or as if with a plug.
  • usage: "plug the hole"; "stop up the leak"
  • synonyms: plug, stop up
• Furnish with battens.
  • usage: "batten ships"
  • synonyms: batten, batten down

adjective

• Free from fear or doubt; easy in mind.
  • usage: "he was secure that nothing will be held against him"
  • synonyms: unafraid, untroubled
• Free from danger or risk.
  • usage: "secure from harm"; "his fortune was secure"; "made a secure place for himself in his field"
• Not likely to fail or give way.
  • usage: "the lock was secure"; "a secure foundation"; "a secure hold on her wrist"
• Immune to attack; incapable of being tampered with.
  • usage: "an impregnable fortress"; "fortifications that made the frontier inviolable"; "a secure telephone connection"
  • synonyms: impregnable, inviolable, strong, unassailable, unattackable
• Financially sound.
  • usage: "a good investment"; "a secure investment"
  • synonyms: dependable, good, safe