ETYM French lecture, Late Lat. lectura, from Latin legere, lectum, to read. Related to Legend.
1. A lengthy rebuke; SYN. speech, talking to.
2. A speech that is open to the public; SYN. public lecture, talk.
3. Teaching by giving a discourse on some subject (typically to a class); SYN. lecturing.

To deliver a lecture or talk; SYN. talk.