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1.
an affectionate soubriquet for the person that has woken your heart and dispelled your misgivings about the world at large (re its "shame and terror" -Saroyan).
pass the spliff dearheart.
by antimattr July 17, 2006
 
2.
the greatest term of affection known to mankind
"peter, you are such a dearheart"
by a town. February 27, 2007
 
3.
Dear Heart means an endearment to a friend when talking, a sign that you care.
Don't worry about the test results, dear heart. Good morning, dear heart! It will be ok, dear heart, good luck!
by myra jane nelson January 18, 2010