This is the 12551st most frequent Spanish word.
mirillas
"Peepholes" or "viewers" in doors or walls.
In this sentence, 'mirillas' refers to the small peepholes on doors that allow a person to look outside or view visitors without opening the door.
A través de las mirillas de la puerta, pude ver quién estaba afuera.
Through the peepholes of the door, I could see who was outside.
Here, 'mirillas' is used to describe narrow slits or holes in a structure, such as a castle, used for observing or firing at attackers while remaining protected.
El diseño del castillo incluye mirillas estratégicas para la defensa.
The design of the castle includes strategic loopholes for defense.
In this context, 'mirillas' represents the viewfinders or eyepieces of an optical instrument, such as a telescope, for focusing on and observing objects.