hetaera
Pronunciation: /hɪˈtɪərə/
(also hetaira /-ˈtʌɪrə/)
noun ( plural hetaeras or hetaerae /-ˈtɪəriː/ or hetairas or hetairai /-ˈtʌɪrʌɪ/)

Origin:
from Greek hetaira, feminine of hetairos 'companion'