Definition of trademarks:
(n) :
A word, symbol, or phrase used to identify a particular company's product and differentiate it from other companies' products.
(n) :
Especially, such a term that is registered with a government agency so as to have legal protection against use by other companies.
(n) :
Any proprietary business, product or service name.
(n) :
The aspect for which someone or something is best known; a hallmark or typical characteristic.
(v) :
(transitive, proscribed) To register something as a trademark.
(v) :
(transitive, proscribed) To so label a product.