What does the name "Mai`es" mean?

"Mai`es” and "Mais`san": strutting. "Mai`es" : a tree` of high-quality wood, and giving this name to your daughter is permissible.

Is it permissible to add the nutmeg to one`s food?

Using a little bit of the nutmeg for seasoning is permissible, but using a great deal of it is impermissible since it could lead to intoxication, and Islam has forbidden all intoxicants and stupefacients. And Allah Knows Best.

Ruling on combining prayers in a marketplace due to heavy rain, knowing that some people performing prayers are customers?

Does the clipping of nails nullify ablution?

No, it does not, and it is preferable to wash the hands afterwards.