Ge-dwimor

According to the Old English Dictionary:

-dwimer, -dwymer, es;

ge-dwimor

n. An illusion, delusion, apparition, phantom; error, fallācia, phantasma = φάντασμα, phantăsia = φαντασία :-- Gedwimor phantasma vel phantăsia, Ælfc. Gl. 78; Som. 72, 54; Wrt, Voc. 46, 14 : 77, 7. Hí wéndon ðæt hit sum gedwimor wǽre they thought that it was an apparition, Homl. Th. ii. 388, 24 : Jud. 15, 19. Hine drehton nihtlíce gedwimor nightly phantoms tormented him, Homl. Th. i. 86, 18. Swylcra gedwimera of such illusions, L. C. S. 5; Th. i. 378, 22. On manegum mislícum gedwimerum with many various delusions, L. Edg. C. 16; Th. ii. 248, 7. ge-dwimor