Noun. A girlfriend who wants to control your weiner with a poisonous, spiked, explosive ball and chain. This girl consumes every waking moment of your life while depriving you of vaginal delight. She provides you with all of the hardships associated with a fiancee while presenting none of the benefits of having a casual girlfriend. Once sucked into the black hole of the girlancee, there is simply no hope of returning to a life containing anything remotely resembling happiness.
"Hey, where is our roommate Calvin?" roommate 1. "Oh, he is at his girlancee's house," roommate 2. "Poor guy," roommate 1.