Nudillo is a masculine noun.
/nuˈðilo/
The term "nudillo" refers to the bony joint of a finger, specifically where the finger connects to the hand. It's commonly used in both medical and everyday contexts to describe injuries or conditions affecting these joints.
In terms of frequency, "nudillo" is more frequently used in oral speech than in written contexts, though it can still often be found in medical texts or discussions related to anatomy.
In boxing, it is essential to protect the knuckles to avoid injuries.
Me lastimé el nudillo mientras jugaba al fútbol.
Though "nudillo" is not commonly featured in many idiomatic expressions, there are a few phrases where it can be incorporated:
To hit with the knuckle implies that we are angry and want to fight.
Con un nudillo bien golpeado, el mensaje es claro: no se debe jugar con la suerte.
With a well-struck knuckle, the message is clear: one should not tempt fate.
Tienes que ser fuerte, como un nudillo bien entrenado.
The word "nudillo" comes from the diminutive form of "nud", which is derived from the Latin "nodus," meaning "knot." This etymological root reflects the bumpy structure of joints.