It's likely a misspelling or a specific term used in a particular context.
Here are some possible meanings based on common French phrases:
* "Es mignon" could be a misspelling of "est mignon," which means "is cute" or "is charming" in English.
* It could also be a misspelling of "les mignons," which means "the favorites" or "the darlings" in English.
If you can provide more context, I might be able to give you a more accurate translation.