Mehtab
Mehtab is Persian in origin and widely used in Urdu; it is not originally Arabic, though written in Arabic script in Persian and Urdu contexts.
Yes. Mehtab is a culturally used, non-religious name referencing moonlight; there is no Islamic prohibition on such a name.
Mehtab is used as a unisex name in South Asia, though usage can vary by family and region.
It is a Persian compound: mah (ماه/mah) meaning 'moon' and tab (تاب/tab) meaning 'light' or 'shine'.
Yes. The term appears in Persian and Urdu poetry and prose to denote moonlight; its usage as a personal name draws on that poetic tradition.