What is "oversleeping"

Usage examples of "oversleeping".

Harry was coming to fetch him in his gig, and it would be a dreadful thing if he were to be late on the ground, perhaps oversleeping himself.

Hatch, uncharacteristically oversleeping, dashed out the door of 5 Ocean Lane and hurried down the front walk, stopping only to grab Friday's neglected mail from the box before heading for the pier.

So much time has been lost by oversleeping that jogging is out of the question until tomorrow.