A word, symbol, or phrase used to identify a particular company's product and differentiate it from other companies' products. | A word, symbol, or phrase used to identify a particular company's product and differentiate it from other companies' products. | Especially, such a term that is registered with a government agency so as to have legal protection against use by other companies. | Any proprietary business, product or service name. | The aspect for which someone or something is best known; a hallmark or typical characteristic.