Crossword Genius

Mock something grubby? (5)

Ross

I believe the answer is:

scoff

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

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

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for scoff that I've seen before include "Greedily consume" , "Deride - guzzle" , "Speak derisively" , "turtle soup for example?" , "Jeer; eat greedily" .)

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