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A constant wall of sound, or an extremely heavy, thick or fast sound.
that guitar is sonic.
by av July 30, 2003
1. The greatest video game character everrrrrrrrrrrrrrrrrrr! He is a blue hedgehog and has to fight the evil Dr. Eggman. (Not Robotnik, Eggman!)

2. Some sort of 50s-style restaraunt.
1. I want Sonic Adventure 2 Battle for Christmas!

2. We could go to that one Sonic place for lunch.
by Mew February 04, 2005
Restaurant with some pretty good burgers.
Let's head down to Sonic to get some Super-Cool deals!
by Rodney Basil October 03, 2003
A blue hedghog whos aim is to thwart the evil Dr. Robotnic and aquire all the chaos emeralds in order to become an invinsible yellow hedgehog. He wears 'Super sneaker' which allow him to run at extraordinary speed.
I wish I could run as fast as Sonic
by Magic E January 25, 2003
Speedy blue hedgehog who has appeared in a myriad of SEGA games. He is the SEGA version of Nintendo's Mario.
Sonic is going faster than the speed of sound!
by Will January 25, 2004
MMM a great place for a burger or fries of all sorts
Hey, lets go eat at Sonic and smoke mad Ls
by pootytang March 11, 2003
That place where you pay for a carhop to bring dinner to your car window rather than having to wait in a drive thru line because you have to get your kids to girl scouts, soccer, dance, etc.
by Hurried Mom March 07, 2003