Crossword Genius

Doctor raking in high earnings gets a small snack (10)

Ross

I believe the answer is:

gingersnap

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'a small snack' is the definition.
(I know that gingersnap is a type of small snack)

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for gingersnap that I've seen before include "Biscuit" , "something to eat" .)

I've seen this clue in The Times and The Sunday Times.
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