If you mean "a word that describes the concept of meaning itself":
* There isn't a single perfect word that captures the *entire* concept of meaning.
* "Semantics" is a good option, referring to the study of meaning in language.
* "Significance" can also work, focusing on the importance or weight of meaning.
If you're asking if there's a word that has its own meaning:
* *Every* word, by definition, has its own meaning. That's how language works!
Let me know if you had something else in mind. 😊