In
Britain "glass" can also be used as a
verb to describe the action of hitting someone with a glass object such as a
bottle so that it shatters on impact and cuts them to ribbons. Alternately, the object can be broken prior to the fight on a wall or other surface. The target is usually the head, and when someone is said to have "been glassed", it is usually assumed that they have been cut across the face or head.
eg: "Did you hear what happened to Davey? Some bastard glassed him last night!"
Glassing is a despicable act reserved for those not brave enough to have a "proper" fight, or just plain nutcases. The weapon of choice for glassing is, well, a pint glass. A regional variation is bottling.