Yucatán settler (5)
I believe the answer is:
mayan
'yucatan settler' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for mayan that I've seen before include "Mexican native" , "Relating to a central American civilisation" , "of a bygone civilisation" , "Former native of Central America" , "Central American Indian language" .)