[sweet.heart] n (14c) 1: darling
2: one who is loved
3: a generally likable person
4: a remarkable one of its kind
[2]sweetheart adj (1942): of or relating to an agreement between an employer and a labor union official arranged privately for their benefit usu. at the expense of the workers "a ~ contract"; broadly: arranged in private for the benefit of a few at the expense of many "a ~ deal"