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the planet Earth
The Moon goes round the Earth.
the Earth’s surface
They studied life on Earth in all its forms.
They felt the earth shaking beneath their feet.
Losing the match brought them back down to earth with a bump.
The Great Wall is the largest man-made structure on earth.
Nothing on earth could get me to speak to her.
There is no reason on earth why we shouldn’t just leave.
What on earth do you mean?
Why on earth would I want to work for you?
The sound effects are like nothing on earth.
I felt like nothing on earth next day.
This is the British English definition of earth. View American English definition of earth.