This is the 1289th most frequent Portuguese word.
reino
"Reino" means "kingdom" in English.
Here, 'reino' is used to denote a classification or a domain in biology, referring to the 'kingdom'.
O reino animal é fascinante.
The animal kingdom is fascinating.
In this context, 'reino' refers to an area or domain governed by a monarchy, meaning 'kingdom'.
O antigo reino era governado por um rei sábio.
The ancient kingdom was ruled by a wise king.
In this sentence, 'reino' metaphorically represents a conceptual sphere or domain, translated as 'realm'.