At first I thought this was a joke, but I can see where the confusing might be coming from.

ASIC simply stands for "Application-specific integrated circuit".

Your desktop or laptop computer is a general purpose device. It can perform many different functions. You can add additional software to your computer to make it do new things. For example: if you install a video-player, you can watch videos. If you install a bitcoin miner, you can mine bitcoins.
So your processor, the piece of hardware that does most of the work, can be used to accomplish a lot of different tasks.

An ASIC is a piece of hardware designed to perform a specific task. What that task is could be anything. It all depends on what the manufacturer designed it to do.