八 字 1. [character 八]:汉字八2. [horoscope;eight characters in four pairs,with each pair consisting of one 天干 and 地支,indicating the year,month,day and hour of one's birth,used formerly in fortune-telling]:用天干和地支表示一个人出生的年、月、日、时的八个字,算命者认为从生辰八个字可推算一个人的命运;旧时还用于婚配中的算命