If you smash something or if it smashes, it breaks into many pieces, for example when it is hit or dropped.

If you smash through a wall, gate, or door, you get through it by hitting and breaking it.

If something smashes or is smashed against something solid, it moves very fast and with great force against it.

To smash a political group or system means to deliberately destroy it.

A smash is the same as a smash hit .

You can refer to a car crash as a smash .