/sweet"hahrt'/ , n.
1. either of a pair of lovers in relation to the other.
2. ( sometimes cap. ) an affectionate or familiar term of address.
3. a beloved person.
4. Informal. a generous, friendly person.
5. Informal. anything that arouses loyal affection: My old car was a real sweetheart.
[ 1250-1300; ME swete herte. See SWEET, HEART ]