黒こく点てんこくてんFreq.FrequencyTop 50,000Meanings1nounblack spot; dark spotGeneral term for a dark or black spot on a surface, such as a stain, blemish, or marking.壁かべに黒こく点てんがついている。There is a black spot on the wall.2nounsunspotastronomyAstronomical term for a temporary dark patch on the sun's surface.
