Anything relating to marijuana. Such as the maijuana itself, the high derived from smoking said marijuana, or the act of smoking.
The term originated in Auburn New York.
"Dude, you wanna score some biddie?"
"Fuck man, I am so Biddie right now."
"Dude, let's go biddie."
Short for "Bridget," the name given to barely literate female 19th century Irish immigrants who resided in NY or Boston. These women mostly worked as kitchen maids.
That Irish biddie can't even read, that's why she has to work in the kitchen to support her barely surviving family