trademarkPronunciation: /ˈtreɪdmɑːk/Translate trademark | into French | into Spanish Definition of trademark noun a symbol, word, or words legally registered or established by use as representing a company or product. a distinctive characteristic or object:the murder had all the trademarks of a Mafia hit verb [with object] (usually as adjective trademarked) provide with a trademark:they are counterfeiting trademarked goods identify (a habit, quality, or way of life) as typical of someone:his trademarked grandiose styletrademark in other Oxford dictionaries Definition of trademark in the US English dictionary