Serving to smash (something). / (originally US, now Britain and Ireland, slightly dated) Wonderful, very good or impressive.

Gerund: The action of the verb to smash.

present participle of smash

(firefighting) An explosion of flue gases accumulated inside a burning building.

(medicine) An acute, highly infectious often fatal disease caused by Variola virus of the family Poxviridae. It was completely eradicated in the 1970s, but still exists in laboratories. Those who survived were left with pockmarks.

One who smacks or spanks. / One who makes a smacking noise, especially while eating. / (humorous slang) A kiss. / (humorous slang) singular of smackers: The lips; money.

Without smoke.

Falsely earnest, smug, ingratiating, or pious. / (rare, dated) unctuous, greasy, as hair from pomade

(idiomatic) To relax; to take time out of one's busy schedule to enjoy or appreciate the beauty of life.

Characteristic of a smart aleck