It's often used to indicate language or speech in words like:
* Polyglot: Someone who speaks multiple languages.
* Diglot: Someone who speaks two languages.
* Monoglot: Someone who speaks only one language.
However, it's not always used in a linguistic context. For example, epiglottis refers to a flap of cartilage in the throat that covers the windpipe during swallowing.
Therefore, the meaning of "-glot" can vary depending on the specific word.