... want day home! (6)

I believe the answer is:

dearth

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

'want' is the definition.
(dearth is a kind of want)

'day home' is the wordplay.
'day' becomes 'd'.
'home' becomes 'earth' (I can't explain this - if you can you should give a lot more credence to this answer).
'd'+'earth'='DEARTH'

Can you help me to learn more?

(Other definitions for dearth that I've seen before include "Severe lack" , "Acute shortage" , "Shortage, paucity" , "Severe shortage" , "Scarcity - famine" .)

I've seen this clue in The Telegraph.

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