Definition of Slam Dunk

What does the term "slam dunk" mean? What is meant by a "slam dunk"?

In the sports world, a "slam dunk" occurs when a basketball player violently throws the ball through the rim with either one hand or two. The "slam dunk" was popularized by the likes of "Dr. J" Julius Erving, Wilt Chamberlain and Michael Jordan, just to name a few.

In the regular world, a "slam dunk" means something that is seen as being a sure thing.

For instance - let's say that you have an idea to improve productivity and save money at your company.

Your bosses love the idea, and say that it is a "slam dunk". They mean that they think that it is a sure thing and is certain to work.

Circling back to the world of basketball, a "slam dunk" attempt has a very high probability of scoring - much higher than a regular jump shot.

Here are examples of a "slam dunk", courtesy of the greatest basketball player of all time: