1. To expose oneself in a vulnerable or unguarded position, especially to that which may cause harm or distress. I bare my breast to you, so do as you will. I am at your mercy! He bared his breast to the armed guards to show that he was not a threat.

2. To share with another person one's private emotions and thoughts, especially those that are emotionally troubling or make oneself vulnerable to the other person in some way. I bared my breast to Samantha and told her how much I loved her.