Río (en. River)
/ˈri.o/
Slang Meanings
To express that something is very easy.
That's a piece of cake, like crossing a river.
Eso es pan comido, como cruzar un río.
To refer to a relaxed situation.
The party was so good it felt like a river of joy.
La fiesta estuvo tan bien que parecía un río de alegría.