Normaly it means "joyfull/sarcastic/and loving" if u use it as a word.
Use it as a name then its "bitchy/awesome/annoying/and loving" well thats what your calling the person ^-^.Or a name itself.
It can also be used as a anime name!
Oh yes,its another word for the tropical flower "hubiscus" normaly foundin hawaii and other places like that
"Yo Eya! whats up!"
"The Eya is so beautiful"