Chlewn
Chlewn is a fictional term used in speculative fiction and world-building to denote a small, cube-shaped object that serves as a multi-functional device within a story’s universe. Depending on the author or setting, a chlewn can function as a ceremonial reliquary, a portable data container, or a magical focus that concentrates or channels power. Because chlewns are not real-world objects, their exact form and properties vary widely between works, and there is no single canonical definition.
Etymology and usage: The name chlewn does not have a consistent etymology in real languages; in published
In culture and plot function: In fantasy settings, chlewns frequently carry family histories, oaths, or spells,
See also: magical artifacts, fictional technologies, world-building devices.