A "night nanny" is someone who helps take care of a baby or child during the night. They assist parents by feeding, soothing, and attending to the child's needs so that the parents can get some sleep. Full definition
The urge to scream, to escape, or - if possible - get a free night nanny who solves all our problems while we sleep is completely understandable. (ign.com)
Into her life comes a most understanding and capable, if very young, night nanny named Tully (a wonderful Mackenzie Davis) who really does make Mary Poppins look inept by comparison. (deadline.com)
Costs for night nannies obtained through an agency may be from $ 12 to $ 25 an hour. (verywellfamily.com)