What does vibration reduction mean?

It says on my new camera nikon box

I think it might be when you're shooting in a car or something to reduce bluring

NIKON offers a Blurr--warning.

It's 'anti shake' - when taking longer exposures that could have image blur due to slight movement, the camera continuously compares images from the sensor and automatically shifts them slightly to keep the object of the photo 'in line' with minimal blur during the exposure.

You can often see this on the screen before taking a photo when it's turned on, if you deliberately let the camera wobble slightly the image on the screen does not move to start with, or continuously 'lags' slightly as the camera tries to compensate for movement.

Vibration reduction and Image stabilizer in Canon means that when you hand hold the dslr to shoot there will be very little shake. It comes handy when you zoom into far distance object and your view becomes shaky, the VR will make it less shaky and steady for you to take good shots. This usually occurs around 100mm and beyond.

VR also comes handy in video recording, as it gives more smooth steady recording compared to non VR with more shaky video.

BTW it's in the lens not the camera body, so if you want it on, you have to turn it on in the lens.

The pixels on the sensor of your camera are absolutely tiny, and even when you think you are holding your camera perfectly steadily you are actually constantly shaking just the tiniest degree. What vibration reduction does is to counter the vibration of your body shaking and other common sources of vibration by either moving elements of the lens or moving the sensor. When you counter that vibration you can shoot slower with a larger aperture (to manually reduce the effect of camera shake you would need to shoot faster and or stop down the lens - counter intuitive but true). Vibration reduction mechanisms are tuned to the way those vibrations are carried by our bodies, and so if you mount your camera on a tripod the vibration reduction needs to be turned off else it can over compensate.