- a practical or concrete illustration of a principle.
Origin of object lesson
First recorded in 1825–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for object lesson
The achievement of American independence had been an object-lesson most potent.
The globe has perished, but the object-lesson in education remains.
But I still think the object-lesson was well worth a Napoleon.
It is not often that a man is so fortunate as to have such an object-lesson as this.Nervous Breakdowns and How to Avoid Them
Charles David Musgrove
Every market night is an object-lesson in political economy.Cornish Saints and Sinners
J. Henry Harris
- a convincing demonstration of some principle or ideal
- (esp formerly) a lesson in which a material object forms the basis of the teaching and is available to be inspected