Assume a name (3)

I believe the answer is:

don

I believe this is a double definition.

'assume' is the first definition.
(thesaurus)

'a name' is the second definition.

(Other definitions for don that I've seen before include "A Spanish grandee like Quixote" , "Get into" , "Lecturer, Mafia chief and Spanish aristocrat" , "Put on; college teacher" , "Put on; lecturer" .)

I've seen this clue in The Irish News and the Evening Standard.

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