Okay kiddo, dibl is short for "drain-induced barrier lowering." That sounds like a lot of big words, but I'm going to explain what it means in a way that you can understand.
So, when you think of a computer chip, you might picture a bunch of tiny wires and transistors that work together to make the chip do what it's supposed to do. A transistor is like a tiny switch that can turn on or off, and it's a really important part of a computer chip.
The drain of a transistor is one of its parts, and it helps control how much electricity can flow through the transistor. But sometimes, the drain can actually make it easier for electricity to flow, even when it's not supposed to. This is called "barrier lowering," because it's like the barrier that's supposed to keep the electricity under control is getting lower.
When this happens, it can mess up how the whole chip works, which can cause problems with your computer or phone or whatever device you're using. So scientists and engineers have to come up with ways to prevent dibl from happening, so that our technology can work the way it's supposed to.