Want to ignore the first world (5)

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 world can be written as Earth)

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 "Where some creatures live" , "Third rock from the Sun" , "Land" , "The 3rd planet from the sun" , "World - soil" .)

I've seen this clue in The Independent.

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