Maybe hoovers furniture top to bottom (4)

I believe the answer is:

eats

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'bottom' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for eats that I've seen before include "what is on the Christmas menu" , "Gets tucked into the cake" , "meal" , "snacks" , "worries" .)

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