This is the 13780th most frequent Spanish word.
sardina
Sardina: Sardine, a small, oily fish.
In this sentence, 'sardinas' refers to the fish species known as sardines.
Las sardinas nadaban en el mar cerca de la costa.
The sardines were swimming in the sea near the coast.
Here, 'sardinas' is used metaphorically to describe a crowded situation.
En el autobús había tantas personas que parecía una lata de sardinas.
In the bus, there were so many people that it looked like a can of sardines.
The word 'sardinas' is utilized in a simile to express the idea of being tightly packed together.