1 four

2 4

1 sky

1 empty

2 air

3 sky

4 in vain

1 air

2 atmosphere

1 space

2 room

3 (fig.) scope

4 leeway

5 (astronomy) outer space

6 (physics, math.) space

1 a worthless piece of paper (idiom)

1 the people are gone and the place is empty (idiom)

2 the sight of a deserted place brings old friends to mind

3 the place is deserted

4 the birds have flown

1 to disseminate in every direction (idiom)

1 empty-handed (idiom); fig. not receiving anything

1 damaged by groundless slander (idiom)