Definition of "heartstrings" []

• Nerves or tendons supposed to brace and sustain the heart; hence, strongest affections; most intense feelings of any kind.

The Century Dictionary (Public Domain)

• "But what really pulls at our heartstrings is the attention SLS devotes to your dog."
• "The word "heartstrings" originally referred to the internal tendons of the heart."
• "That beat, provided by our "heartstrings," reverberates throughout the circulatory system (e.g.,"