It means relative to the east. It is also a way of referring to a Uruguayan. Native of Uruguay. It comes from the East and in general terms can refer to a Chinese, a Japanese or a Korean. Name of the longest mountain range in Colombia.
1º_ From the east, relative to a region in the east or to that cardinal point. 2º_ In the area of the Río de la Plata it is said especially of the native of the Oriental Republic of Uruguay.