What's the correct spelling of this word? I've recently had an car accident and heard the word "rerender(?)" for the first time. So the context is, another car had hit back of my car while I was waiting for the red light to turn green.

So I assume the word "rerender" is the word to describe a driver who was hit by another car at the back. But I couldn't find the word on google/dictionary and the spelling for this word must be wrong. What's the correct spelling of this word?