Refers to a type of pearl or a term of endearment in some regions.
Ella siempre lleva consigo una perlo que le regaló su abuela.
She always carries with her a pearl that her grandmother gave her.
El collar que llevaba estaba adornado con un hermoso perlo que brillaba bajo la luz.
The necklace she wore was adorned with a beautiful pearl that shone under the light.