* A misspelling or variation of another word: Could you please double-check the spelling? Perhaps you meant "nechi" with a different accent or a similar-sounding word?
* A term specific to a particular culture or language: If you know the origin or context of the word, please provide more information. This would help me understand its meaning.
* A made-up word: It's possible "nechi" is a newly created term or a fictional word.
Please provide more context or information about the word "Nechi" so I can help you understand its definition.