The word "extensor" has been used in literature in ways that illustrate its technical roots in anatomy, yet its applications span both creative and scientific contexts. For example, in "Peter Pan" by J. M. Barrie, the term appears as part of an anatomical designation—"U. Extensor metacarpi pollicis" [1]—inviting readers to engage with precise, almost clinical language within a fantastical narrative. By contrast, in Charles Darwin's "The Origin of Species," the term is employed in a more literal sense to describe an "extensor muscle" that serves a functional role in a specific anatomical region [2]. These instances demonstrate how "extensor" functions both as a technical descriptor in scientific discourse and as a stylistic element in literature, bridging the gap between the realms of fiction and empirical observation.