* It's a misspelling: Perhaps it's meant to be "My tare," referring to the weight of an empty container in a weighing process.
* It's a specific term: It could be a term used in a particular field, like scientific research or a specific industry.
* It's a made-up phrase: It's possible it's a made-up word or a play on words with no established meaning.
To understand the meaning, you need more context. Please provide more information, such as:
* The full sentence or phrase where you encountered "mi tared."
* The context or situation.
* The language the phrase is in.
With more information, I can help you decipher the meaning.