Hashtagging (v.) The act of having sex while smoking hash. Derived from "to tag" meaning, "To have sex with," and "hash" meaning "hash."
by JamesBeam October 17, 2010

1) (v) to attract, through social media, attention to political issues so important to you that you are ready to go on a crusade in order to defend said issues.
2) (n): something that, prior to the advent of the social media phenomenon, was known as a 'pound key') on your phone.
2) (n): something that, prior to the advent of the social media phenomenon, was known as a 'pound key') on your phone.
I am going to hashtag ''Mitt Romney for president'', and no i won't press the hashtag-pound key- on my phone, because it doesn't serve any purpose.
by Sexydimma October 11, 2014

Its a tag used to talk about an especif subject on twitter.
Once all the users use it, it gets a lot easier to search subjects at the http://search.twitter.com/
Once all the users use it, it gets a lot easier to search subjects at the http://search.twitter.com/
by danielemarques January 14, 2009

Relate-able experience, following the status quo, something that many people do and would tweet about if they had the means to at the time
Today was so hashtag.
by Thathoodratshi August 28, 2013

by McTreevil February 21, 2015

A million years ago when Facebook or some thing was invented people saw that there were a number of things in their picture (usually 1 piece of shit) so they took the number sign # and made it a Hashtag
#HASHTAG #Urbandictionary #Socialmedia #Somemoreshit
by DumbDump234 July 30, 2017

Used when expressing humour or sarcasm, usually when playing on an online multiplayer game (e.g. Minecraft)
by Katnis. Is. Awesome! <3 November 2, 2015
