Webster's Revised Unabridged Dictionary · 1913

Discourse

Discourse , noun

[Latin discursus a running to and fro, discourse, from discurrere, discursum, to run to and fro, to discourse; dis- + currere to run: compare French discours. See Course.]

1.
The power of the mind to reason or infer by running, as it were, from one fact or reason to another, and deriving a conclusion; an exercise or act of this power; reasoning; range of reasoning faculty. [Obsolete]
Difficult, strange, and harsh to the discourses of natural reason. — South
Sure he that made us with such large discourse, Looking before and after, gave us not That capability and godlike reason To fust in us unused. — Shakespeare
2.
Conversation; talk.
In their discourses after supper. — Shakespeare
Filling the head with variety of thoughts, and the mouth with copious discourse. — Locke
3.
The art and manner of speaking and conversing.
Of excellent breeding, admirable discourse. — Shakespeare
4.
Consecutive speech, either written or unwritten, on a given line of thought; speech; treatise; dissertation; sermon, etc.; as, the preacher gave us a long discourse on duty.
5.
Dealing; transaction. [Obsolete]
Good Captain Bessus, tell us the discourse Betwixt Tigranes and our king, and how We got the victory. — Beau. & Fl

Discourse , intransitive verb

1.
To exercise reason; to employ the mind in judging and inferring; to reason. [Obsolete]
Have sense or can discourse. — Dryden
2.
To express one's self in oral discourse; to expose one's views; to talk in a continuous or formal manner; to hold forth; to speak; to converse.
Bid me discourse, I will enchant thine ear. — Shakespeare
3.
To relate something; to tell. — Shakespeare
4.
To treat of something in writing and formally.

Discourse , transitive verb

1.
To treat of; to expose or set forth in language. [Obsolete]
The life of William Tyndale... is sufficiently and at large discoursed in the book. — Foxe
2.
To utter or give forth; to speak.
It will discourse most eloquent music. — Shakespeare
3.
To talk to; to confer with. [Obsolete]
I have spoken to my brother, who is the patron, to discourse the minister about it. — Evelyn