What is "overslept"

Usage examples of "overslept".

The others must have overslept too, because Mary Jo was still in the initial stages of her lecture.

She lay awake for a long time thinking about it and then overslept so that her breakfast was a scrappy affair of tea and toast, and for all the good her sleepless night had done her, she might just as well not have given Philip a thought, and indeed she had no time to think about him at all during the morning.

In consequence she had overslept, so that she had had to hurry over her dressing and sketchy breakfast, attend to Podge and then hurry through the streets to the Underground.