rio
n. uncountablen. a short name for the city of Rio de Janeiro in Brazil. People also use it to refer to the famous carnival or the beautiful beaches there.
n. the common shortened name for the Brazilian city of Rio de Janeiro. Often used as a metonym for the city's cultural exports, such as its annual carnival or musical traditions.
We are planning a trip to Rio next summer.
The international summit was held in Rio to take advantage of the city's extensive conference facilities and hotels.
While the postcard images of Rio focus on the dramatic granite peaks and white sands, the city's true character is found in the vibrant, densely populated hillsides where samba was born.
Used as a proper noun; typically appears without an article unless referring to a specific event like 'the Rio Olympics'.