A public speaker or a rocky eminence (6)

I believe the answer is:

orator

'a public speaker' is the definition.
('orator' can be a synonym of 'public speaker')

'or a rocky eminence' is the wordplay.
'rocky eminence' becomes 'tor' (I've seen this in another clue).
'or'+'a'+'tor'='ORATOR'

(Other definitions for orator that I've seen before include "A gifted public speaker" , "A fluent public speaker" , "He addresses" , "Formal speech maker" , "One addressing" .)

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

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