0 a part of a Christian church ceremony in which a priest gives a talk on a religious or moral subject, often based on something written in the Bible:
The Reverend William Cronshaw delivered/preached the sermon.
Today's sermon was on the importance of compassion.
I really don't think it's a politician's job to go delivering sermons on public morality.
1 a talk on a religious or moral subject, esp. one given by a religious leader during a religious ceremony
