Crossword Genius

Doctor who ensured push came to shove? (5)

Ross

I believe the answer is:

roget

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

'doctor' is the definition.
(I know that Roget is a doctor)

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

Can you help me to learn more?

(Other definitions for roget that I've seen before include "man of many words" , "Thesaurus creator" , "Thesaurus maker" , "lexicographer" , "Thesaurus inventor" .)

I've seen this clue in the Sydney Morning Herald.
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