What does neiko mean in Japanese?

"Neiko" (ねいこ) is not a common Japanese word. It's possible it's a misspelling or a name.

If you can provide more context, I might be able to help you understand what it means.

For example:

* Is it part of a phrase?

* Is it written in a different way?

* Where did you encounter this word?

Knowing more about the context will help me figure out what "neiko" could mean.