ARCO is a multinational corporation based in the United Kingdom that specializes in the retail and wholesale of petroleum products. The company's name is an acronym for Atlantic Richfield Company. ARCO's crossword solutions are 'ARENAS' (6 letters), 'Felice' (6 letters), and 'ARENA' (5 letters). ARENAS is a plural noun meaning large public buildings or spaces used for sports, entertainment, or other public events. Felice is an Italian name meaning happy or fortunate. ARENA is a singular noun meaning a large enclosed area used for public events such as sports or entertainment.