| an infant or young child who is abandoned or orphaned and left in a hospital for lack of a foster home. |

| boarder baby n. An infant, often the offspring of drug addicts or AIDS victims, who remains for months, sometimes up to a year, at the hospital where he or she was born, waiting for placement in a home. |
boarder baby board·er baby (bôr'dər)
n.
An infant, often the offspring of drug addicts or AIDS victims, who remains for months, sometimes up to a year, at the hospital where he or she was born, waiting for placement in a home.