Crossword Genius

After Hamilton's third chicane negotiated, one may be waiting in the pits (8)

Ross

I believe the answer is:

mechanic

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'one may be waiting in the pits' is the definition.
I can't tell whether this definition defines the answer.

'after hamilton's third chicane negotiated' is the wordplay.
'after hamilton's third' becomes 'm' (I can't explain this - if you can you should give a lot more credence to this answer).
'negotiated' indicates an anagram.
'chicane' anagrammed gives 'echanic'.
'm'+'echanic'='MECHANIC'

Can you help me to learn more?

(Other definitions for mechanic that I've seen before include "Person who repairs cars etc." , "Mender of machines" , "One repairs engines" , "Skilled repairer" , "Trained garage assistant" .)

I've seen this clue in The Independent.
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