x
adjective
Definitions
Intersex or non-binary (in passports and identification documents).
adjective
Definitions
Suitable only for those aged 16 or (later) 18 years and over.
(movie rating) Obscene.
conjunction
Definitions
Used between the names of two characters to denote a ship, particularly in anime, manga, and video games.
Used in place of and in artist collaborations.
Example: Taska Black x DROELOE, Steve Aoki x Lauren Jauregui, etc.
Sources:https://en.wiktionary.org/wiki/X