What it means

1. verb make a gift of
   “She gave away her antique furniture”
2. verb formally hand over to the bridegroom in marriage
3. verb give away information about somebody
   “He told on his classmate who had cheated on the exam”
4. verb make known to the public information that was previously known only to a few people or that was meant to be kept a secret
   “The auction house would not disclose the price at which the van Gogh had sold”