Pure chaos in the country (4)
I believe the answer is:
peru
'the country' is the definition.
(Peru is an example)
'pure chaos' is the wordplay.
'chaos' indicates anagramming the letters.
'pure' anagrammed gives 'PERU'.
'in' acts as a link.
(Other definitions for peru that I've seen before include "Country of Lima, Cuzco and Paddington Bear" , "South American state" , "Mario Vargas Llosa's native land" , "Mario Vargas Llosa's country" , "South American country" .)