Pronunciation: (ī'sing),[key] —n. 1. a sweet, creamy spread, as of confectioners' sugar, butter, and flavoring, for covering cakes, cookies, etc.; frosting.
2. Meteorol.a coating of ice on a solid object. Cf. glaze, rime1.
3. Aviation.the freezing of atmospheric moisture on the surface of an aircraft.
4. Ice Hockey.the act of a player shooting the puck from the defensive half of the rink over the opponent's goal line, but not into the goal, as a defensive maneuver to keep the puck out of the reach of attacking opponents, resulting in a penalty against the defensive team if the puck is then next touched by an opponent other than the goalkeeper.
5. icing on the cake. See frosting (def. 5).