A rich sort of job for a professor (5)

I believe the answer is:

chair

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

'job for a professor' is the definition.
I can't judge whether this defines the answer.

'a rich sort' is the wordplay.
'sort' indicates an anagram.
'a'+'rich'='arich'
'arich' anagrammed gives 'CHAIR'.

'of' acts as a link.

Can you help me to learn more?

(Other definitions for chair that I've seen before include "rocker?" , "Backed seat for one" , "Professorship" , "director at meeting" , "Windsor, for example" .)

I've seen this clue in The Globe and Mail.

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