To inform or teach with all relevant details; to brief.
To study in detail; to familiarize oneself with all available information.
To teach (somebody) by giving a speech on a given topic.
To preach, to berate, to scold.
a class that primarily consists of a (weekly or other regularly held) lecture (as in sense 1)
A berating or scolding.
A spoken lesson or exposition, usually delivered to a group.