こくてん 黒点 LinksSentence search for 黒点Sentence search for こくてんKanji details for 黒 and 点Edit in JMdict Noun1. black spot; dark spotNoun2. sunspotAstronomyたいよう太陽のこくてん黒点をかんさつ観察しよう。Let's observe sunspots. Discussions Log in to talk about this word.