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18.
1) a sport bike.
2) a male erection.
1) I think i'm gonna save up my money and buy a crotch rocket next summer.
2) I can't stand up until i get rid of this crotch rocket.
by the saskatchewan stud muffin January 23, 2007
 
8.
A Japanese motorcycle. By default this is state of the art, fast as fucking hell, and will blow the doors off ANYTHING ELSE on the road.
Suzuki GSXR1000, Yamaha R1.
by David February 22, 2004
 
9.
A rocket with two wheels, one of which is often not on the ground due to high power/weight ratio, that you straddle and zoom all around slow moving boxes on wheels.
Suzuki Gixxer 750, Gixxer 1000, Honda CBR 929 RR, Yamaha R1, Ninja, Hayabusa
by zoom zoom September 01, 2004
 
10.
A sport bike, usually japanese, but somtimes italian, rarley german (the new BWM K1200R) or american (buell) The minimum that really is a crotch rocket is along the lines of the classic 2 strokers like the RZ350 or the NS400r, cominng up to the the pinnicle in the likes of the RCv211 or the yamaha M1. More common examples are along the likes of the ninja/GSXr/YZFr/CBR series.

Very fast, even the slowest of these (the RZ350 and NS400R) can run times in 11's in bone stock. with somthing like a turboed GSX1300R hitting 7's.
Did ya see the turbo busa video where the crotch rocket rips a big ol viper a new asshole?
by He who arises in might September 24, 2004
 
11.
An exceptionally powerful, lightweight, and maneuverable state-of-the-art motorcycle completely opposite in everyway to bikes built in America.
What do you mean by get a "real" bike?REAL unreliable, expensive, under-powered, heavy, unresponsive, unrefined or do you mean the only REAL chance a fat old man like you could pick-up chicks?
by kctR1 July 17, 2003
 
12.
chick magnet that is a motorcycle
yo that crotch rocket gets so many bitches !!!
by r1riderz April 04, 2003
 
13.
a Crotch rocket has taken on several definitions:

1) a very fast motor cycle, either foreign or domestic that one must lean forward on while riding thus making it look like a rocket is being stratled between ones legs.

2) an erection so hard that it can be somewhat painful due to the extreme arousal or amount of blood in the penis.

3) a vibrator, usually metallic or metallic in color.
1) like my crotch rocket? i pay more in insurance per month than the payments of the bike itself!

2) certain erection giving pills can give men 4 hour long crotch rockets.

3) my friend got a new crotch rocket from the adult novelty store.
by GayManAlpha July 06, 2007
 
14.
Sport bikes/motorcycles that have a smooth ride and fast speeds
one of the few vehicles i havent ridden on known for racing
by for you to decide July 11, 2003