Redline

Redline means the maximum limit that a thing can go to or work at. It is like a rule that tells you when you have gone too far or is doing too much. Imagine you have a toy car and the toy's wheels only work well if you push it really fast up to its limit. Once you go too fast, the wheels can break or the toy car may not work anymore, which means you have reached the redline. The same goes for machines and engines like cars or bikes, there is a maximum speed or rev limit, which is the redline. If you go over it, it can damage the machine and make it stop working. So, redline is like a stop sign that tells you when to slow down before you push things too far!