to attribute blame or make someone responsible for some issues or problems
Hey did you hear the news? Jesse tried to throw Steve under the bus today about the Finkleman account screwup. They're going to be throwing it down old school style in the parking lot at 3:30. We're going to set up the digicam and put it up on youtube.
In action... http://www.chrisbrogan.com/namecalling/Actually, this definition sucks. Let me add my own. You can also share "throw under the bus" with a friend or share it on Twitter.