In the late 70's I found the name
KAI in a book of Baby Names. It was male and supposedly meant
King (Ancient Persian). Unfortunately I no longer have the book, but named my daughter
KAI - she can be anything she wants to be.
A number of people have also told me that
Kai also means food in some Polynesian languages (Maori - New Zealand)and also has some links to food in some Asian languages (Thai).