v. phr. , informal To stop being mean; be kind, generous, or sympathetic. Have a heart, Bob, and lend me two dollars. Have a heart, Mary, and help me with this lesson. He didn't know if the teacher would have a heart and pass him.
HAVE A HEART
Meaning of HAVE A HEART in English
American idioms English vocabulary. Английский словарь американских идиом. 2012