Definition: "Slam on" is a phrasal verb that means to apply something quickly and carelessly. It is often used when talking about putting on paint or other materials in a hasty manner, without much attention to detail.
In more advanced contexts, "slam on" can also refer to applying something forcefully or suddenly, such as slamming on the brakes in a car. This implies a sense of urgency or a quick action.
Slam on brakes: To apply the brakes of a vehicle suddenly.
Slam on a door: To shut a door forcefully.
Slam dunk: An idiom meaning to achieve something easily or successfully.
Slam shut: Another phrasal verb meaning to close something forcefully.
"Slam on" is a useful verb to describe a quick, careless application of something, often in informal contexts.