What is the meaning of give away?

verb

• Make a gift of.
  • usage: "She gave away her antique furniture"
• Make known to the public information that was previously known only to a few people or that was meant to be kept a secret.
  • usage: "The auction house would not disclose the price at which the van Gogh had sold"; "The actress won't reveal how old she is"; "bring out the truth"; "he broke the news to her"; "unwrap the evidence in the murder case"
  • synonyms: unwrap, disclose, let on, bring out, reveal, discover, expose, divulge, break, let out
• Formally hand over to the bridegroom in marriage; of a bride by her father.
• Give away information about somebody.
  • usage: "He told on his classmate who had cheated on the exam"
  • synonyms: denounce, tell on, betray, rat, grass, shit, shop, snitch, stag