Spanish magistrate or mayor (7)
I believe the answer is:
alcalde
I believe this is a double definition.
'spanish magistrate' is the first definition.
(I've seen this before)
'mayor' is the second definition.
(I have seen 'Spanish mayor' mean 'alcalde' so perhaps 'mayor' could also mean 'alcalde')
(Other definitions for alcalde that I've seen before include "Spanish mayor" , "Spanish magistrate" .)