Heáh-helm

According to the Old English Dictionary:

heáh-helm

adj. Having foliage high up; of a light, having far-reaching rays :-- þone heáhhelman leóman iubar alticomum (the passage is: Modio lateat ne tecta lucerna, sed iubar alticomum Domini diffundat in aedem, Vita S. Cudbercti c. 21, 50), Hpt. 33, 238, 1. heah-helm