A person who is dear to one.

“Mary, the youngest daughter, was always her mother's darling.”

A kind or sweet person; sweetheart.

“The girl next door picks up all my shopping for me. She is such a darling.”

An affectionate term of address.

“Pass the wine, would you darling?”

Dear; cherished.

“She is my darling wife of twenty-two years.”

Charming

“Well isn't that a darling little outfit she has on.”