A term used for a woman who is both her husband's wife and his mother. Coined by Mrs. Dignan, AP Literature teacher, for Iocaste in Oedipus.
"Cleetus was growing tired of his momwife. She was giving him a lot of trouble about his sister's brusband."
A woman that is with a male relative and it is unknown whether that man is her son or her husband. She appears too old to be his wife but too young to be his mother.
Look at that momwife with that guy over there.