glassing

Violent attack in the UK that happens typically in bars or clubs bathrooms. It involves smashing a drinking glass or beverage bottle against someone's face and then pushing it into their face. It's very common in the UK with 80,000 instances happening every year.

Mother was glassed in the face by a stranger in the club's bathroom while she was reapplying make-up, she didn't see it coming.
That guy was permanently blinded by a glassing attack in a bar when he was in the bathroom.