I have a chair, I declare (9)

I believe the answer is:

professor

I believe this is a double definition.

'i have a chair' is the first definition.
(someone holding a chair at a university)

'i declare' is the second definition.
(someone who professes or declares things)

(Other definitions for professor that I've seen before include "chairman?" , "Member of an academic faculty" , "Head of faculty, department" , "One affirming faith" , "Senior member of college faculty" .)

I've seen this clue in The Telegraph.

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