To label (a message) with a hashtag.
A metadata tag, signaled by a preceding hash sign (#), used to label content.
The hash sign itself, when used as part of a hashtag.
To create a sign out of something.
To show one’s intentions with a sign etc.; to indicate, announce.
To mean; to betoken.
To make a difference; to matter (in negative or interrogative expressions).
To give (something) a meaning or an importance.