what is the meaning of - hastag?

[Edward]

What does "hashtag" mean

[Epic]

A tag embedded in a message posted on the Twitter microblogging service, consisting of a word within the message prefixed with a hash sign.

[Steve]

It means= #swag

[HCKA]

(on social-networking Web sites) 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.

[SUDHAKAR Kuruvada]

HASH TAG* is tag embedded in a message posted on the Twitter microblogging service, consisting of a word within the message prefixed with a hash sign.

[Rosaa]

If you hashtag it means the topic of whag it is.
Ex:if i upload a picture on IG of my dog & hashtag dog.

[Sean M]

a Hashtag is another name for the Pound Sign (#) it is used on Twitter & other Social Media Web-Sites to create a link which leads anyone who clicks on it to similar posts