(often followed by up) To stop sleeping.

“I woke up at four o'clock this morning.”

(often followed by up) To make somebody stop sleeping; to rouse from sleep.

“The neighbour's car alarm woke me from a strange dream.”

To put in motion or action; to arouse; to excite.

The act of becoming awake from sleep, or a period of time spent awake.

Occurring during wakefulness.