"Wormhole Junction" was the disparaging nickname given to Deep Space 9 by Quark in 2370, when he was talking about his life to Arjin.
He claimed to never have recovered from the setback his relationship with a District Sub-Nagus' sister caused him. According to Quark, he was left "tending bar out here in Wormhole Junction while the big boys fly past me at warp speed." (DS9: "Playing God")