In exactly the same way anything else got its name or meaning. The language "evolved" just the same as any other language did. You may as well ask where the word "word" came from.
After inserting a spawn point, go to the explorer sidebar. You will see the teams folder. You can change what the team is called by clicking on the name, and typing in whatever you want.
To name any object on Roblox, select it and look in the properties window on the right. Next to the place where it says "Name", type what you want to name the object and hit enter. The object will be...