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hashtag

American  
[hash-tag] / ˈhæʃˌtæg /

noun

  1. (on social media websites)

    1. a word or phrase preceded by a hash mark (#), used within a message to identify a keyword or topic of interest and facilitate a search for it.

      The hashtag #sandiegofire was used to help coordinate an emergency response to the fire.

    2. a hash mark used in this way.

    1. a word or phrase preceded by a hash mark (#) or by the word hashtag , used to add wit or emphasis to a spoken or written statement.

    2. a hash mark or the word hashtag used in this way, as in the sentence His goodbye was so hashtag awkward.


verb (used with or without object)

hashtagged, hashtagging
  1. to add a hashtag to (a word, topic, or message).

    Someone on Twitter just hashtagged the film festival.

hashtag British  
/ ˈhæʃˌtæɡ /

noun

  1. (on the Twitter website) a word or phrase preceded by a hash mark, used to denote the topic of a post

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Usage

What does hashtag mean? A hashtag is a word or phrase preceded by a hash mark (#), also known as a pound sign, used primarily on social media.On social media, hashtags provide users a way to search for posts related to the word or phrase in the hashtag. You can click on a hashtag to see a list of recent posts that include that keyword. (A couple of our favorites are #WordOfTheDay and #WordNerd.)To hashtag means to add a hashtag to a word, topic, or message, as in We hashtag our posts about history with #HistoryMatters so you can find them easily.Example: Use the hashtag #petthedog with a video of you petting your dog for a chance to win our contest.

Etymology

Origin of hashtag

First recorded in 2005–10; hash (mark) + tag 1 (in the sense “a label or keyword”)

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The hashtags spoke of "Bridges of Friendship" and "United Through Oceans".

From BBC

The overkill hits its nadir when the Bride repeatedly wails the survivors’ hashtag, “Me too!”

From Los Angeles Times

“When it makes a hashtag out of you, I’ll have two ghosts to deal with.”

From Literature

She will say: "You cannot fix waiting times with a hashtag. You cannot grow wages on TikTok. You cannot build a hospital with a committee. You need a plan."

From BBC

Fist clenched over his heart, Westlake belted out God Save the Queen with such gusto, that images were shared widely across the internet, spawning a hashtag #DoItLikeHarry.

From BBC