Like the abbreviation bi for bisexual, pan is an abbreviation for pansexual.
Pan generally refers to the sexual orientation of someone that can love or be attracted to a person of any sex, not just females or males, including but not limited to males, females, transexuals, tansvestites, gender benders, hermaphrodites, intersexuals, androgenous people, and those with sex-chromosome anomaly such as klinefelter syndrome or turner syndrome.

A sarcastic name for singer and songwriter Dua Lipa

Pan is the son of Hermes (Mercury).

n. Abbv. of the Spanish word "panocha."

adj. Abbv. of the Spanish word "panocha" (trans. "pussy"), used to describe a cowardly person.

Shorter, gayer way to call someone a pansy.