What is the meaning of private?

noun

• An enlisted man of the lowest rank in the Army or Marines.
  • usage: "our prisoner was just a private and knew nothing of value"
  • synonyms: buck private, common soldier

adjective

• Confined to particular persons or groups or providing privacy.
  • usage: "a private place"; "private discussions"; "private lessons"; "a private club"; "a private secretary"; "private property"; "the former President is now a private citizen"; "public figures struggle to maintain a private life"
• Concerning things deeply private and personal.
  • usage: "private correspondence"; "private family matters"
• Concerning one person exclusively.
  • usage: "we all have individual cars"; "each room has a private bath"
  • synonyms: individual
• Not expressed.
  • usage: "secret (or private) thoughts"
  • synonyms: secret