A first wife. You work out all the kinks with her so you'll have a happy marriage and life with your true soul mate.
She is usually cute, but lacks your level of: education, social standing, or wealth.
Person 1: He married Jamishcha? Damn son, she's a hood rat! He could have done way better than that, he went to Harvard!
Person 2: It's ok, she's just a practice wife.