Dweomer

Dweomer, is the Old English word meaning 'witchcraft' that derives from the Old Norse term dvergmál literally meaning 'dwarf talk' (dvergr dwarf + mál talk), referring to the secret knowledge of magic among the Norse dwarves. See for instance the entry, dweomercræft. A related Middle English word that derives from the phrase 'dwarf talk', dwergma, means 'echo', crediting the dwarves who live in the stones with the sound.

In role-playing games, like Dungeons & Dragons, and in fantasy novels, a dweomer is the magical aura on an enchanted item. More broadly, it may refer to the aura of a spell having been cast whose duration remains active.