2)An STI ridden, extremely promiscuous female of ill repute.
3)One who contains dicks with their "bucket" - referred to as such because buckets are nutoriously dirty.
*only to be used in situations of EXTREME hatred or sluttiest. i.e. it's the worst thing you can say about a female.
"Yeah, she's a serious dickbucket."
Terms stems from the observation that fat girls' vaginas are generally disproportionately gaping wide, thus resembling a bucket.
"Tom's such a dick bucket!"
As anatomy, in Fat Girl Science:
"And here, class, is the dickbucket, forming at the juncture between the fatty's legs."