1 N-VOC (尤用作对自己小的人的爱称)亲爱的，小宝贝儿 You can call someone sweetie if you are fond of them, especially if they are younger than you. (尤用作对自己小的人的爱称)亲爱的，小宝贝儿 [informal]

2 N-COUNT 好心人;善人 If you say that someone is a sweetie, you mean that they are kind and nice. 好心人;善人 [informal]

3 N-COUNT (儿童用语)糖果 Sweets are sometimes referred to as sweeties by children or by adults speaking to children. (儿童用语)糖果 [British]