Peruvian /pəˈɹuː.vi.ən/adjective 1noun 1forms 1 adjective1 •Of, from, or pertaining to Peru or the Peruvian people.My favorite was the simplest: alfajor, a double-deck Peruvian cookie, spread with a layer of caramel. — 2010 noun1 •A person from Peru or of Peruvian descent. formsPeruvians