trademark

noun

1. any name, symbol, figure, letter, word, or mark adopted and used by a manufacturer or merchant in order to designate specific goods and to distinguish them from those manufactured or sold by others. A trademark is proprietary and is usually registered with the Patent and Trademark Office to assure its exclusive use by its owner or licensee.
2. a distinctive mark or feature particularly characteristic of or identified with a person or thing (often used attributively): her trademark wit and sarcasm.

verb (used with object)

3. to stamp or otherwise place a trademark designation upon.
4. to register the trademark of.

noun

1. the name or other symbol used to identify the goods produced by a particular manufacturer or distributed by a particular dealer and to distinguish them from products associated with competing manufacturers or dealers. A trademark that has been officially registered and is therefore legally protected is known as a Registered Trademark
2. any distinctive sign or mark of the presence of a person or animal

verb (tr)

3. to label with a trademark
4. to register as a trademark

n.

1838 (the thing itself attested continuously from 14c.), from trade (n.) + mark (n.1). Figurative use by 1869. As a verb, from 1904. Related: Trademarked; trademarking.