a speech read or delivered before an audience or class, esp. for instruction or to set forth some subject

a lecture on Picasso's paintings.

a speech of warning or reproof as to conduct; a long, tedious reprimand.

to give a lecture or series of lectures

He spent the year lecturing to various student groups.

to deliver a lecture to or before; instruct by lectures.

to rebuke or reprimand at some length

He lectured the child regularly but with little effect.

verb

praise

noun

address , allocution , chalk talk , discourse , disquisition , harangue , instruction , oration , pep talk * , pitch * , soapbox , spiel * , talk , castigation , censure , chiding , dressing-down * , going-over , moralism , preaching , preachment , rebuke , reprimand , reproof , scolding , sermon , talking-to , telling off , declamation , prelection , colloquium , colloquy , discussion , dissertation , excursus , homily , symposium , treatise

verb

address , declaim , deliver , discourse , expound , get on a soapbox , give a talk , harangue , hold forth , orate , prelect , recite , speak , spiel * , spout , talk , teach , admonish , berate , chide , exprobate , flay , give going-over , give piece of mind , moralize , preach , rank on , rate , reprimand , reprove , scold , sermonize , tell off , castigate , censure , class , hearing , lesson , oration , rebuke , sermon , spiel , upbraid