空く

to open (e.g. doors)

to open (e.g. business, etc.)

to be empty

to be vacant; to be available; to be free

to be open (e.g. neckline, etc.)

to have been opened (of one's eyes, mouth, etc.)

to come to an end

to open (one's eyes, mouth, etc.)

to have a hole; to form a gap; to have an interval (between events)