YouTubePronunciation: /ˈjuːtjuːb/Definition of YouTube verb [with object] upload a video of (someone or something) to the video-sharing website YouTube:Obama’s inaugural will be the first to be YouTubed. search for or watch on YouTube:I went back and YouTubed the showOrigin: early 21st century: from YouTube, the proprietary name of the video-sharing websiteYouTube in other Oxford dictionaries Definition of YouTube in the US English dictionary