1. Math: In mathematics, the mean is a measure of central tendency. It's the average of a set of numbers. To find the mean, you add up all the numbers in the set and then divide by the total number of values.
2. General Meaning:
* Unkind or nasty: This is the most common meaning of "mean." For example, "She was mean to her little brother."
* Miserable or unpleasant: For example, "The weather was mean today."
* Impressive or remarkable: This is a less common usage, often found in informal speech. For example, "He's a mean guitar player."
3. Slang:
* Excellent or skilled: Similar to the previous example, "He's a mean cook."
To understand what "mean" means in a specific situation, you need to consider the context.
Can you give me an example sentence or tell me more about what you're asking about? I can then give you a more specific answer.