Grinds away

I think it could be either:

Which length description are you looking for?:

toils

'grinds away' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for toils that I've seen before include "making snare" , "Labours; snares" , "net" , "nets" , "Works hard" .)

I've seen this clue in The New York Times.

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