"moon"
The name Lua is commonly a female name from the "Portuguese" origin that means "moon".
Lua is the Portuguese word for moon, a feminine noun descended from Latin luna. It is used as a feminine given name in Portuguese-speaking countries, and the noun's grammatical gender matches the name's recorded use for girls in the United States. The name therefore carries the plain lexical meaning "moon" rather than a separate invented meaning.
The pronunciation of Lua is LOO-uh.