Speaker/ˈspiːkər/ Definition 1 of 4Pro Tip 1/3Event Context Refers to someone who gives a talk or a presentation at an event. The event's speaker discussed climate change. Pro Tip 2/3Not Always Expert Speakers may share personal stories or opinions, not just expertise. The speaker shared his travel experiences. Pro Tip 3/3Respectful Address Use 'speaker' to show respect, similar to 'guest' at events. Let's welcome tonight's speaker with applause.