Hlidr
Hlidr is a term found in Old Norse literature, most notably in the Poetic Edda. It is a poetic term that can refer to several things, often translated as "shield" or "protection." In some contexts, Hlidr is used as a kenning, a metaphorical compound expression, for a shield. For example, it might appear in phrases like "the tree of Hlidr" to mean a sword, or "the waves of Hlidr" to refer to a shield.
The term can also be a name or epithet for certain mythological figures. Odin, the chief god