Clasping either wrist with the other hand, in front of the chest. Called when player puts his hands on opponent or his equipment. Means the goal is disallowed when done by referee. By a linesman, it means no off-side or icing. Called when player hooks opponent with his stick.
Water is sprayed over a concrete floor that contains freezing pipes.
Some rinks vary slightly. If there's a tie when regulation play is over, a 5 player shootout is played. If there is still a tie, a sudden death shootout occurs until there is a winner. Six ounce of vulcanized rubber, three inches in diameter and one inch thick, makes up a hockey puck. It's frozen before entering play to make it less likely to bounce.