This is the 7184th most frequent Portuguese word.
leis
"Leis" means "laws" in English.
In this sentence, 'leis' refers to the established legal rules of the country.
As leis do país devem ser respeitadas por todos.
The laws of the country must be respected by everyone.
Here, 'leis' is used metaphorically to mean the principles and natural rules described by physics.
Estudo as leis da física para entender o universo.
I study the laws of physics to understand the universe.
In this context, 'leis' denotes the systematic principles and theories governing the field of economics.