trademark [trād′märk΄]
1. a symbol, design, word, letter, etc. used by a manufacturer or dealer to distinguish a product or products from those of competitors: usually registered and protected by law: cf. SERVICE MARK
2. Informal a distinctive feature or characteristic that serves to identify the maker or originator [the use of reddish gold is one of Titian's trademarks]
1. to put a trademark on (a product)
2. to register (a symbol, word, etc.) as a trademark
Informal of or being a distinctive, identifying feature or characteristic [a mystery novel full of her trademark plot twists]

English World dictionary. . 2014.