This is the 8501st most frequent Spanish word.
riba
"Riba" in Spanish can mean "riverbank" or "shore." It is also an archaic term for "up" or "above."
In this sentence, 'riba' is used as a term indicating the direction 'upstream' in relation to the flow of the river, originating from colloquial or dialect usage.
El barco está navegando riba el río.
The boat is sailing upstream in the river.
Here, 'riba' means 'on top of' or 'on', signifying a position above another object. Its usage can be regional or dialectal.
Pon las cajas riba de la mesa.
Put the boxes on the table.
In this context, 'riba' conveys the meaning 'beyond' in a metaphorical sense, describing a situation extending past certain limits.