1. A unit of language: This is the most common meaning of the word. A word is a single, distinct meaningful element of speech or writing. It can be a noun, verb, adjective, adverb, etc. Examples: "cat", "run", "happy", "quickly".
2. Speech or utterance: "Word" can also refer to spoken or written language in general. Examples: "He didn't say a word." "The word on the street is..."
3. Promise or vow: "Word" can also mean a promise or vow, especially one given in honor or loyalty. Examples: "He gave his word he would be there." "They are men of their word."
4. Information or news: "Word" can also mean information or news, especially when it is spread by word of mouth. Examples: "I haven't heard a word about her." "Word on the street is that they're getting married."
5. A command or order: "Word" can also refer to a command or order, especially one given by a superior. Examples: "The captain gave the word to fire." "I'm waiting for the word from headquarters."
6. A short message or greeting: "Word" can also refer to a short message or greeting, often written or sent electronically. Examples: "Leave me a word when you arrive." "Send me a word when you're done."
7. A musical note: In musical notation, a word can be a single note or a syllable. Examples: "The song has a strong word in the melody."
The specific meaning of "word" will become clear based on the context of the sentence or conversation.