The Royal Spanish Academy (RAE) recognizes more than a dozen meanings of heel, whose meanings sometimes depend on the etymological origin considered. The term can come from vulgar Latin thallus, in turn derived from talus (which translates as “ankle”).
The most frequent use of the concept refers to posterior area of the foot of people. The heel, therefore, is the rear area of the foot, standing in the lower leg.
The heel is located below the calf. By extension, the section of the footwear that covers this part.
It is common for newborns to have the heel test. This is how you know a puncture that is carried out to obtain a sample of blood, which is then analyzed to determine if the baby suffers from any congenital pathology, such as adrenal hyperplasia, phenylketonuria or hypothyroidism.
The expression Achilles heel, on the other hand, refers to what constitutes the main vulnerability or weakness of an individual. The phrase is linked to a mythological story where it is said that Achilles, at birth, was submerged by Tetis in the river Stygian to endow him with immortality, although as the child was supported by his right heel, said part of the body it was not protected.
Finally, heel can refer to the part through which the bow of the violin and other musical instruments is taken; to the document that is separated from the body of a book; to the inner edge of a tire; or the angle of inclination of a boat, for example.