Umbrella: The umbrella is a formation on the power play in which the defense and one wing stay close to the blue line and pass the puck among themselves until another attacker is open by the goal.
Unnecessary roughness: Also called roughing, this is a two minute penalty that is a judgment of the referee.
Wave off: When a stoppage of play is about to occur, the referee may decide to continue play by "waving off" the stoppage. Examples include icing and offside.
Weak side: The opposite side of the zone where the puck is currently being played
Wide around: When a puck is shot into the attacking zone, close to the boards, it may travel close the boards all the way to the opposite point. This is known as a wide-around.
Wing: The players on the offensive line that are on both sides of the center are known as wings.
Wraparound: An offensive player may skate around the back of the net and then attempt to quickly push the puck into the net between the goalie and the corner of the net for a wraparound goal.
Wrist shot: A wrist shot is accomplished by bringing place the puck on the stick and bring the stick forward rapidly. The level of follow through will determine whether the shot goes high or low.
Zamboni: The device that resurfaces the ice between periods is known as a Zamboni. The Zamboni Company manufactures these vehicles specifically for this purpose.
Zone: The ice is divided into three zones by the blue lines - offensive, neutral, and defensive.
Zone Coverage: Zone coverage is a defensive strategy in which each defensive player covers an area of the defensive zone.