Top Definition
Extremely cool, radical and amazing. A substitute for the popular (read: played out) word 'awesome'.

"That show last night was rocketgun, man!"

"Dude, this new breakfast cereal is totally rocketgun."
by thatguy345 April 05, 2009
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.