空

Rare term

morning sky

Rare term

to forcefully open up (a hole; in a wall, etc.)

Rare term

to speak frankly; to open one's heart

Rare term

to throw out (everything inside); to empty (e.g. a box)

Rare term

utterly lacking (in ability); hopeless; useless; poor

Rare term

anti-aircraft gun

changeable weather

empty place; unoccupied space