GEISLI
nafnorðkarlkyn
a, m.
1. prop. a beam, staff, = geisl; but only used,
2. metaph. a beam, ray, of the sun, Rb. 472, Fas. i. 516, Hkv. 1. 15, Hom. 128; sólar-g., a sun-beam; ár-g., morning-beam, poët.: the eye is called brá-geisli, brow-beam, Korm. Geisla-dagr, m. ‘Beam-day;’ it is prob. a rendering of Epiphany, though it is not used of that very day, which is called Þrettándi, but of the seventh day after, viz. the 13th of January.