This is the 7752nd most frequent Spanish word.
luciérnaga
Firefly.
The word 'luciérnaga' is used to refer to the bioluminescent insect commonly known as a firefly.
Anoche vi una luciérnaga en el bosque.
Last night I saw a firefly in the forest.
Here, 'luciérnaga' is employed to describe the creature in the context of its characteristic glow.
La luciérnaga ilumina el campo oscuro con su luz.
The firefly lights up the dark field with its glow.
In this sentence, 'luciérnaga' is used metaphorically to represent hope in a poetic context.