Here's a breakdown of the word:
* Poly- means "many"
* -glot refers to "tongue" or "language"
So, a polyglot is literally someone with "many tongues" or "many languages."
It's important to note that there's no set number of languages a person needs to know to be considered a polyglot. While it's often associated with speaking multiple languages fluently, it can also apply to individuals who have a basic understanding of several languages.