Definition: The term "parameter" is like the secret code of life - a secret that's only known to those who understand it. It's used when something needs to be set up or put into place, and no one else knows what it is.

For example, suppose you're trying to install a new router in your house. You need to put in a few parameters: the IP address, password, and security level. No one else will know these details, except for your tech guy who's on this project. But don't worry, because with "parameter", no one can guess what you're doing!