名詞 sweet heart:

1. a person loved by another person
   同義詞：sweetheart, sweetie, steady, truelove
2. any well-liked individual
   同義詞：sweetheart
3. a very attractive or seductive looking woman
   同義詞：smasher, stunner, knockout, beauty, ravisher, sweetheart, peach, lulu, looker, mantrap, dish

形容詞 sweet heart:

1. privileged treatment of a favored person or corporation (sometimes unethically)
   同義詞：sweetheart