This is the 2720th most frequent Catalan word.
argentí
Argentí: Argentine; relating to Argentina or its people.
In this sentence, 'argentí' is used as an adjective to describe the nationality of the word 'amic' (friend) indicating that he is Argentinian.
El meu amic argentí viu a Barcelona.
My Argentinian friend lives in Barcelona.
Here, 'argentí' functions as an adjective linked to 'menjar' (food), characterizing it as food from Argentina.
El menjar argentí és molt saborós.
Argentinian food is very tasty.
In this case, 'argentí' operates as a noun referring to a person from Argentina who won the competition.