黑子 Traditional form: 黑子 Pinyin (reading): hēizǐ Definitions: black piece (in Chinese chess); black stone (in Go) (astronomy) sunspot Characters: 黑 - black; dark; evil, sinister 子 - son, child; seed, egg; fruit; small thing Traditional characters: 黑 - black; dark; evil, sinister 子 - son, child; seed, egg; fruit; small thing