This is the 343rd most frequent German word.
hinaus
"Out" or "to the outside."
Here, 'hinaus' is used to indicate motion outward from inside to outside through the window.
Er schaut zum Fenster hinaus.
He looks out the window.
In this sentence, 'hinaus' conveys the sense of exceeding or going beyond a limit or point.
Wir gehen über das Ziel hinaus.
We go beyond the goal.
'Hinaus' here suggests physically moving outwards through or beyond the door.