a formally registered symbol identifying the manufacturer or distributor of a product
"The company's distinctive red swoosh is its trademark, instantly recognizable as a symbol of their brand identity on every product."
A word, symbol, or phrase used to identify a particular company's product and differentiate it from other companies' products.
"The jagged lightning bolt is Nike's trademark that instantly signals its athletic shoes are genuine."
In plain English: A trademark is a unique word, symbol, or design that identifies a specific brand or company's products.
"The jagged lightning bolt is the company's trademark symbol on every product."
To register something as a trademark.
"The company decided to file for a trademark on their unique logo to protect it from competitors."
In plain English: To trademark something means to officially register it so no one else can use your unique brand name or logo.
"The company decided to trademark its new logo to protect it from copycats."
Distinctive, characteristic, signature.
"Her trademark smile instantly made her recognizable in any crowd."
"The company's famous red logo is instantly recognizable as its trademark design."
Usage: Use trademark as an adjective to describe something that serves as a distinctive or unique identifier of a specific brand or person. It is often interchangeable with signature when referring to personal style but carries stronger legal connotations regarding official branding.
The word trademark is a straightforward combination of the words trade and mark. It originally referred to a symbol used by merchants to identify their specific goods in commerce.