Definition from Wiktionary, the free dictionary
dwimmer (plural dwimmers)
- Magic, magic arts; sorcery; spell; occult art.
1954, J. R. R. Tolkien, The Two Towers:
- "It is ill dealing with such a foe: he is a wizard both cunning and dwimmer-crafty, having many guises."
2010, W. R. Cooper, Oriana Oakley and the Primrose Path:
- “The Lych and his dark dwimmer spell have you resisted—even defeated, defeated for the present. But you have not destroyed. They shall return in time, I fear.”
2011, John Henson, Broken Wings:
- The soldiers peered into the deep dark shaft In which lay the monk with tonsorshorn A victim of the sorcerous lady's dwimmer craft