What is the proper definition of the term envoys?
An envoy is a term for a representative, usually though not exclusively of a government sent on a foreign diplomatic mission. It can also generally refer to an agent of an individual or organisation.
Although the term 'a word which names...' is a common definition for a noun, I believe it is a flawed definition. I believe that this terminology should be removed from all texts and teaching materials. A word that is a name is a proper noun, not just any noun. A noun is a word for a person, place, or thing. A proper noun is the name of a person, place, or thing.
a definition is a passage that explains the meaning of a term (a word, phrase or other set of symbols), or a type of thing. The term to be defined is definiendum (plural: definienda). A term may have many different senses or meanings. For each such specific sense, a difiniens (plural: definientia) is a cluster of words that defines that term.