空

vacuum

Buddhism

absolute void; complete vacuity

Idiomatic expression

to be free; to be available

aircraft

unusual space; other dimension

Esp. 道を空ける

to make way for; to make room for; to get out of the way

Esp. 道を開ける

to pave the way for; to open up opportunity

Astronomy

(outer) space

cloudy sky; overcast sky

gliding (through the air)

completely empty (of a residence, etc.); vacant; deserted

body from which the soul has left; corpse

Orig. meaning

shed skin (of a snake, insect, etc.)

almost completely empty; virtually empty

がらあき only

inadequately defended; undefended; unguarded; unprotected

to be away from home; to be out of the house

wintry sky; cold weather (in winter); wintry weather

to leave space (between)

to have time free; to have time to spare

subspace (in science fiction); space free from the laws of physics

fabrication; pipe dream

low altitude; low sky

Noun or verb acting prenominally

anti-aircraft; antiaircraft

to be hungry

staying in the air; remaining airborne

evening sky; twilight sky

armchair theory; impracticable plan; unworkable idea

to feel hungry; to get hungry

clear sky; cloudless sky