Uruguai | Article about Uruguai by The Free Dictionary
Uruguay (yo͝o`rəgwā, gwī, Span. o͞oro͞ogwi`, o͞oro͞owī`), river, c.1,000 mi (1,610 km) long, rising in S Brazil and flowing in an arc W, SW, and S to the Río de la Plata, an estuary; it forms part of the Brazil-Argentina border and most of the Argentina-Uruguay line.Its chief headstream is the Pelotas of S Brazil; the Río Negro Negro, Río