Yes, the little symbol above has a few meanings. Whether you know it as a number sign or a hashtag, it was once just a symbol that became a word in our society. Even a famous musician once decided he’d rename himself and use a symbol instead of letters. It worked for a while, but we’ve gone back to calling him by his royal name, for the most part.
While symbols often change their purpose in our communication, there will always be a use for them, especially in this world on texting and 140 character tweets. You can find a bigger list of symbols that we turned into words right here.