What is the meaning of retained?

verb

• Hold back within.
  • usage: "This soil retains water"; "I retain this drug for a long time"; "the dam retains the water"
  • synonyms: retain
• Allow to remain in a place or position or maintain a property or feature.
  • usage: "We cannot continue several servants any longer"; "She retains a lawyer"; "The family's fortune waned and they could not keep their household staff"; "Our grant has run out and we cannot keep you on"; "We kept the work going as long as we could"; "She retained her composure"; "this garment retains its shape even after many washings"
  • synonyms: retain, continue, keep, keep on
• Secure and keep for possible future use or application.
  • usage: "The landlord retained the security deposit"; "I reserve the right to disagree"
  • synonyms: retain, hold, keep back, hold back
• Keep in one's mind.
  • usage: "I cannot retain so much information"
  • synonyms: retain

adjective

• Continued in your keeping or use or memory.
  • usage: "in... The retained pattern of dancers and guests remembered"
  • synonyms: maintained