The word "overlook" means to fail to notice or consider something, either because it is missed or because it is intentionally ignored. It can also refer to having a view from a higher position, like looking down on a landscape from a hilltop.
The word "overlook" comes from the Middle English word "overlokken," which means to look over or to inspect. It is a combination of "over," meaning above or higher, and "look," meaning to see or gaze.