What is the meaning of sorrow?

noun

• An emotion of great sadness associated with loss or bereavement.
  • usage: "he tried to express his sorrow at her loss"
• Sadness associated with some wrong done or some disappointment.
  • usage: "he drank to drown his sorrows"; "he wrote a note expressing his regret"; "to his rue, the error cost him the game"
  • synonyms: regret, rue, ruefulness
• Something that causes great unhappiness.
  • usage: "her death was a great grief to John"
  • synonyms: grief
• The state of being sad.
  • usage: "she tired of his perpetual sadness"
  • synonyms: sadness, sorrowfulness

verb

• Feel grief.
  • synonyms: grieve