Central American country, formerly British Honduras (6)
I believe the answer is:
belize
This clue is a double definition.
'central american country' is the first definition.
(country in Central America)
'formerly british honduras' is the second definition.
(I've seen this before)
(Other definitions for belize that I've seen before include "Caribbean country" , "Central American republic" , "Central American country, formerly British Honduras" , "Country formerly called British Honduras" , "Central American state" .)