In literature, the term “arm” is employed with remarkable versatility, serving both literal and figurative roles. Authors use the physical arm to denote bodily descriptions and actions—ranging from Proust’s delicate observation of a thinning arm ([1]) to vivid depictions of violence and physical struggle as characters grasp or defend with their limbs ([2], [3]). At the same time, “arm” symbolizes emotional closeness and protection: characters may lean on one another for support, whether it’s Robin Hood holding a youth at arm’s length to maintain distance ([4]), or a comforting embrace that signifies familial warmth and reassurance ([5], [6]). Moreover, the arm is expanded into metaphorical fields, representing strength or power in heroic contexts such as the battle-ready arm of mythic warriors ([7], [8]). Thus, across genres—from romantic encounters to epic confrontations—the arm becomes a multifaceted emblem imbued with physical, emotional, and symbolic significance.