What is the meaning of Smashing?

Serving to smash (something).

Wonderful, very good or impressive.

The breaking or destruction of (something brittle) in a violent manner.

The destruction or disintegration of something by being smashed.

The hitting of something extremely hard.

The complete and sudden ruin or ruination of something.

An overwhelming victory or success.

The deformation of something through continuous pressure.

An act of sexual intercourse.

A disastrous failure of something.

present participle and gerund of smash

Source: wiktionary.org