The California-born, politically correct alternative to and/or replacement for the word "bro". Although the target of reference is usually female, it is perfectly acceptable to address a subject of any or unknown gender, as the word itself is unisexual and non-descriminatory vs male, female, or other.
"It ain't no bro; it ain't no sista; it's'a brosis, brosis!"
Man: "Dude, man, brosis, that ass is 'hella dank'. I'd hit it like an abusive husband."
Response from woman or subject of unknown gender: "Fuck you, pig! But I appreciate the fact that you did not call me bro, my bro."