Top Definition
A verbalization, or onomatopoeia, of a really gigantic explosion.
Saddam was hanging out in Baghdad one day in March when all of a sudden - fwackoom! - half the city was vaporized by an American airstike.
by bjorn_skurj December 30, 2003
To destroy with a really impressively cool magic attack.
"Look! I'm fwackooming your king!"
by Tom December 28, 2003
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.