Noun
A third gender, a category of people who are not male or female, or whose sexual roles, anatomy, or identities place them outside of the established male and female categories.
(dated, collective) Gay people.
(dated, collective) The clergy, the priesthood (seen as emasculate or not participating in sex).
Source: en.wiktionary.orgInstead of "lesbian", terms such as "strange", "twilight", "queer", and "third sex", were used in the titles, and cover art was invariably salacious. Source: Internet
However, this third sex is usually negatively valued as a pariah class in ancient texts. Source: Internet
Hijra activists campaigned for recognition as a third sex in India and Travesti groups began to organize against police brutality across Latin America while activists in the United States formed direct-confrontation groups such as the Transexual Menace. Source: Internet
These were members of the " third sex " who rejected the roles of women to be subservient, feminine, and domestic. Source: Internet