1. A single distinct meaningful element of speech or writing, used with others (or sometimes alone) to form a sentence and communicate meaning.
* Example: "The cat sat on the mat."
2. A unit of language that carries meaning and can be spoken or written.
* Example: "The word happy has a positive connotation."
3. A promise or agreement.
* Example: "He gave his word that he would be there."
4. News or information.
* Example: "I haven't heard a word about what happened."
5. A command or instruction.
* Example: "The captain gave the word to fire."
6. A short speech or address.
* Example: "She gave a moving word at the funeral."
The best definition for you will depend on the specific context in which you are using the word.