Crossword Genius

Love cycling the world (5)

Ross

I believe the answer is:

earth

I'm a little stuck... Click here to teach me more about this clue!

'world' is the definition.
(I know that Earth is a world)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for earth that I've seen before include "World - soil" , "electrical safety precaution" , "Soil; fox's lair" , "Huge cost" , "wire" .)

I've seen this clue in The Independent.
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