pos>n. [ German: counterglow. ] A faint patch of light in the night sky that appears opposite the sun; a reflection of sunlight by micrometeoric material in space. Syn. -- counterglow. [ WordNet 1.5 ]
(n) a faint spot of light in the night sky that appears directly opposite the position of the sun; a reflection of sunlight by micrometeoric material in space, Syn. gegenschein