Speaker is a common English word with multiple meanings depending on the context.
1. A person who speaks, especially in public: "The speaker at the conference was very engaging."
2. The presiding officer in a legislative assembly: "The Speaker of the House called for order."
3. A device that converts electrical signals into sound: "My Bluetooth speaker has great bass."
4. In linguistics, a native speaker of a language
5. (Informal) Someone who talks a lot: "She's quite the speaker, isn't she?"