#Hashtag

noun
  1. A word or phrase preceded by the hash symbol (#), used on social media platforms to categorize content and make it easily searchable by users. noun
    She added the #hashtag to her post to increase its visibility.
    The campaign went viral after people started using the #hashtag.
  2. The act of tagging a word or phrase with the hash symbol (#) on social media to associate it with a particular topic or trend. verb
    He decided to hashtag the event name to join the conversation online.
    If you hashtag your posts, they are more likely to be discovered by others interested in the topic.