Crossword Genius

A snooze on the carpet? (3)

Ross

I believe the answer is:

nap

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

This clue could be a double definition.

'a snooze' is the first definition.
(I know that snooze is a kind of catch a wink)

'the carpet?' is the second definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.

'on' is the link.

Can you help me to learn more?

(Other definitions for nap that I've seen before include "Quick sleep; raised pile" , "Raised fibres on surface of cloth or leather" , "A fuzzy surface texture" , "soft, fluffy surface" , "Snatch forty winks" .)

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