A person who only pursues romantic relationships with wealthy partners for financial gain. Scott's friends warned him that Tracy was a gold digger and was only interested in marrying him for his money.
(as) cold as a welldigger's ass (in January)
rude slang Very cold. I am so sick of being cold as a welldigger's ass all winter long—that's why I'm moving to Florida.
gold digger
n. a woman who pays attention to a man solely because of his wealth. (Certainly also applicable to men as well.) Sam called Sally a “gold digger,” and she was devastated.
hole digger
n. a lowly ditch digger; a common laborer. (As disparaging as burger-flipper.) Yo want to spend the rest of your life as a drunken hole digger?