(1):
(v. t.) To discourse to or of, as in a sermon.
(2):
(n.) Specifically, a discourse delivered in public, usually by a clergyman, for the purpose of religious instruction and grounded on some text or passage of Scripture.
(3):
(v. i.) To speak; to discourse; to compose or deliver a sermon.
(4):
(v. t.) To tutor; to lecture.
(5):
(n.) A discourse or address; a talk; a writing; as, the sermons of Chaucer.
(6):
(n.) Hence, a serious address; a lecture on one's conduct or duty; an exhortation or reproof; a homily; - often in a depreciatory sense.