Question

define trademark ......... .....

Answer 1

A trademark, trade mark, or trade-mark is a recognizable sign, design, or expression which identifies products or services of a particular source from those of others, although trademarks used to identify services are usually called service marks.

Answer 2

Trademark (®) means a symbols, infact, a registered symbol, that a company can use for its trade and which can not be copied.
A trademark is protected by a Copyright. (©)