have a heart

have a heart

To be kind and compassionate. Your sister has a migraine, so have a heart and turn down the TV. Mr. Wilson is reserved, but he does have a heart under that stern exterior.
See also: have, heart
Farlex Dictionary of Idioms.

have a heart

Fig. to be compassionate; to be generous and forgiving; to have an especially compassionate heart. Oh, have a heart! Give me some help! If Anne had a heart, she'd volunteer to help us on the charity drive.
See also: have, heart
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

have a heart

Be merciful, show pity; also, be reasonable. For example, Have a heart-I can't pay you back until next month, or Have a heart and stop your arguing now. This expression is often put as an imperative, as in the examples. [c. 1900] Also see harden one's heart.
See also: have, heart
The American Heritage® Dictionary of Idioms by Christine Ammer.

have a heart

be merciful, show pity (usually imperative).
See also: have, heart
Farlex Partner Idioms Dictionary

have a ˈheart

(spoken) used for asking somebody to be sympathetic or kind: ‘We’ll work until midnight.’ ‘Have a heart, Joe. Can’t we stop earlier than that?’
See also: have, heart
Farlex Partner Idioms Dictionary
See also:
  • with all (one's) heart
  • with all heart
  • with all my heart
  • with all one's heart
  • (one's) heart is set against (something)
  • one's heart is set against
  • have a heart-to-heart
  • have a heart-to-heart (talk)
  • set your heart on something
  • set your heart/mind on something/on doing something