breach

noun
  1. An act of breaking or failing to observe a law, agreement, or code of conduct. noun
    The company was sued for breach of contract.
    His actions were considered a breach of trust.
  2. A gap in a wall, barrier, or defense, especially one made by an attacking army. noun
    The soldiers managed to create a breach in the enemy's defenses.
    There was a breach in the castle wall after the siege.
  3. A break in relations or a rift between people or groups. noun
    The argument led to a breach between the two friends.
    Efforts were made to heal the breach between the neighboring countries.
  4. To make a gap in and break through (a wall, barrier, or defense). verb
    The attackers breached the fortress walls.
    Hackers breached the company's security system.