South American or possibly Nigerian ant (11)

I believe the answer is:

argentinian

'south american' is the definition.
(Argentinian is an example)

'possibly nigerian ant' is the wordplay.
'possibly' indicates an anagram.
'nigerian'+'ant'='nigerianant'
'nigerianant' with letters rearranged gives 'ARGENTINIAN'.

'or' acts as a link.

(Another definition for argentinian that I've seen is " Eg, native of Buenos Aires".)

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