New Age gathering united in country (6)
I believe the answer is:
guinea
'country' is the definition.
(Guinea is an example)
'new age gathering united in' is the wordplay.
'new' is an anagram indicator.
'gathering' means one lot of letters goes inside another.
'united' becomes 'u'.
'age' anagrammed gives 'gea'.
'u'+'in'='uin'
'gea' placed around 'uin' is 'GUINEA'.
(Other definitions for guinea that I've seen before include "Old sum of money - west African republic" , "See 10" , "Old unit of sterling worth 21 shillings" , "Old coin; African country" , "One pound and fivepence" .)