A building for public, especially Christian worship. The company of all Christians regarded as a spiritual body. A specified Christian denomination: the Presbyterian Church. A congregation. Public divine worship in a church; a religious service: goes to church at Christmas and Easter. The clerical profession; clergy. Ecclesiastical power as distinguished from the secular: the separation of church and state. To conduct a church service for, especially to perform a religious service for (a woman after childbirth). Of or relating to the church; ecclesiastical.