trademark

Etymology

From trade + mark.

noun

1. A word, symbol, or phrase used to identify a particular company's product and differentiate it from other companies' products.
2. Any proprietary business, product or service name.
   Trademark Notice / The following are trademarks or registered trademarks of their respective companies: […] Google is a trademark of Google Corporation; eBay is a trademark of eBay, Inc. 2005, Kai A. Olsen, The Internet, the Web, and eBusiness, page xv
3. The aspect for which someone or something is best known; a hallmark or typical characteristic.

verb

1. (proscribed) To register something as a trademark.
2. (proscribed) To so label a product.

adj

1. (informal) Distinctive, characteristic, signature.
   Sutho took a pull at his Johnny Walker and Coke and laughed that trademark laugh of his and said: `Okay. I'll pay that all right.' 1996, Jon Byrell, Lairs, Urgers and Coat-Tuggers, Sydney: Ironbark, page 294
   Riise did crash a fantastic, trademark free-kick against the bar from 25 yards but it was the Potters who increasingly posed the greater threat. October 15, 2011, Owen Phillips, “Stoke 2 - 0 Fulham”, in BBC Sport