1º_ Each head of domestic cattle, although it also applies to wild animals such as wild boar. From the Latin res ("thing, property"). 2º_ As an acronym it has more developments outside of Spanish, such as the English Renewable Energy Solutions ("Renewable Energy Solutions"), or the Catalan Reserves Estratègiques de Sòl ("Strategic Land Reserves"). 3º_ 'RES' is the IATA code of Resistencia International Airport (Chaco Province, Argentina). See res- .