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 so label a product.
To register something as a trademark.
Distinctive, characteristic, signature.
Any proprietary business, product or service name.
The aspect for which someone or something is best known; a hallmark or typical characteristic.
A word, symbol, or phrase used to identify a particular company's product and differentiate it from other companies' products.