Sermon \Ser"mon\, n. [OE. sermoun, sermun, F. sermon, fr. L. sermo, -onis, a speaking, discourse, probably fr. serer, sertum, to join, connect; hence, a connected speech. See Series.]

1. A discourse or address; a talk; a writing; as, the sermons of Chaucer. [Obs.]

--Chaucer.

2. 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.

This our life exempt from public haunts Finds tongues in trees, books in the running brooks, Sermons in stones and good in everything. --Shak.

His preaching much, but more his practice, wrought, A living sermon of the truths he taught. --Dryden.

3. Hence, a serious address; a lecture on one's conduct or duty; an exhortation or reproof; a homily; -- often in a depreciatory sense.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Sermon \Ser"mon\, v. i. [Cf. OF. sermoner, F. sermonner to lecture one.]

To speak; to discourse; to compose or deliver a sermon. [Obs.]

--Holinshed.

What needeth it to sermon of it more? --Chaucer.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Sermon \Ser"mon\, v. t.

1. To discourse to or of, as in a sermon. [Obs.]

--Spenser.

2. To tutor; to lecture. [Poetic] --Shak.

Source: Webster's Revised Unabridged Dictionary (1913)