epistle
/ɪˈpɪsl; ɪ`pɪsl/ n
1 (usu joc 通常作戏谑语) letter 书信
Her mother sends her a long epistle every week. 她母亲每周给她写一封长信.
2 Epistle (Bible 圣经) any of the letters included in the New Testament, written by the Apostles 《新约全书》中的使徒书信
the Epistle of St Paul to the Romans 《保罗达罗马人书》.