⒈ 旧俗订婚前写明各自生辰八字的帖子，双方互相交换保存。RMk词库汇 - 现代汉语词典库，汉语词典在线查询
英card of horoscope presented by candidate for betrothal; written marriage proposal on which are stated the year,month,day and hour of one's birth;RMk词库汇 - 现代汉语词典库，汉语词典在线查询