godan verb (-u), transitive verb
open up and clear out; vacate by opening
Used for opening doors, windows, or shutters wide and removing everything inside, leaving the space empty. Often implies a thorough clearing out, such as vacating a room or building.
引っ越しの日に、部屋を開け払った。
On moving day, we opened up and cleared out the room.
古い蔵の戸を開け払
We opened the doors of the old storehouse wide and took everything out.