せい 星 LinksSentence search for 星Sentence search for せいKanji details for 星Edit in JMdict Noun1. Chinese "star" constellation (one of the 28 mansions)Astronomy, See also 星宿, See also 二十八宿, See also 朱雀Noun2. SingaporeAbbreviation, See also シンガポール Discussions Log in to talk about this word.