Where, abroad, a state enrolled nurse is out to get married (6)
I believe the answer is:
sweden
'where abroad a state enrolled' is the definition.
The answer is a location as well as being a singular noun. This is suggested by the definition.
'nurse is out to get married' is the wordplay.
'nurse' becomes 'sen' (abbreviation for Senior Enrolled Nurse).
'is out' indicates putting letters inside.
'to get married' becomes 'wed' ('wed' can be a synonym of 'get married').
'sen' going around 'wed' is 'SWEDEN'.
Can you help me to learn more?
(Other definitions for sweden that I've seen before include "land" , "northern kingdom" , "We send out to the northern state" , "Nobel's country" , "North European country" .)