Crossword Genius

Drivelling drudgery? (7)

Ross

I believe the answer is:

slavery

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

'drudgery?' is the definition.
(I've seen this before)

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for slavery that I've seen before include "Extreme drudgery" , "Bondage" , "State of subjugation" .)

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