What is the meaning of Discourse?

Verbal exchange, conversation.

Expression in words, either speech or writing.

A conversation.

A formal lengthy exposition of some subject, either spoken or written.

Any rational expression, reason.

An institutionalized way of thinking, a social boundary defining what can be said about a specific topic (after Michel Foucault).

Dealing; transaction.

To engage in discussion or conversation; to converse.

To write or speak formally and at length.

To debate.

To exercise reason; to employ the mind in judging and inferring; to reason.

To produce or emit (musical sounds).

Source: wiktionary.org