This is the 9657th most frequent Spanish word.
arterias
Arteries.
In this sentence, 'arterias' refers to the physiological blood vessels.
Las arterias principales llevan sangre oxigenada a todo el cuerpo.
The main arteries carry oxygenated blood throughout the body.
Here, 'arterias' is metaphorically describing main traffic routes in a city.
Las arterias de esta ciudad están tan congestionadas que el tráfico es imposible.
The arteries of this city are so congested that traffic is impossible.
In this context, 'arterias' is used figuratively to indicate paths or channels.