name

• (Philippines) Initialism of Bureau of Immigration.

noun

• (slang, originally Internet slang) Alternative spelling of boy.
  "The boi who has been my best friend, the cause of my pain, but never quite my lover is gone....I'm sitting here in his Radiohead "don't tell me what kind of day to have" tee (it smells like him) listening to WYIN, and trying not to cry."
• (BDSM, especially in roleplay) A male bottom (i.e. submissive partner), defined not by junior age, but by his obedient role and submission to the dominant "top".
  "boi will be treated as a boi at all times and will find himself the recepitent ^([sic]) of many bare bottom spankings, private and in front of Daddies ^([sic]) friends."
• (LGBTQ) A lesbian who adopts a boyish appearance.
  "So new that most people—most lesbians—over the age of 30 have no idea what a boi is. […] Most bois are in their twenties and have come of age in a time when women’s and gay rights seem like more of a given and less of an urgent struggle than they did to lesbians ten or twenty or more years older."
• (neologism) A trans boy; a trans man or transmasculine person.
  "For example, “queer” would include self-identified lesbians and gays who also have sex with the “opposite sex,” sexual practices and relationships that include kink, s/m, polyamory, and pansexuality, gender play and fuck including femmes and those feminine of center, butches and those masculine of center, queens, femboys, gurls, bois, sissies, tomboys, crossdressers, drag queens and kings, and genderfluid people."