Ollie

Ollie isn't just your neighbour's friendly dog's name, but also a term relevant to the sport, snowboarding. The christening of the move's name is credited to a skateboarder, Alan "Ollie" Gelfand. An ollie is a manoeuvre in which the rider transfers weight from the front to the back foot to snap the board up off the ground. This is different from a pop, which occurs when a rider jumps using both feet simultaneously. Ollie is borrowed from skateboarding, in which the skater kicks the tail of the board down while jumping in order to make the board pop into the air.

 Piste

The French term refers to a downhill ski trail. It derives from the Old Italian verb, pistare, meaning "to trample down," and is related to the word, piston. The term, off piste, is occasionally used to refer to leisurely (and sometimes illicit) skiing done outside official marked trails-- which basically qualifies as a foul.

 Mogul

No, the word is not related to the mogul that refers to a wealthy or powerful individual. This mogul is the hill sense of mogul, which derives from a word (mugl) that means "small hill" in some German dialects. A mogul is a bump in a ski run. Moguls, in this sense, are usually formed from the tendency of snow to collect into mounds as skiers take sharp turns. The moguls are then used to perform turns and aerial manoeuvres.

 Icing

This is not the icing on the cake you're eyeing. Icing is a defensive manoeuvre in hockey, which happens when a player shoots the puck from the defensive half of the rink over the opponent's goal line--but not into the goal--in order to keep the puck out of the reach of attacking opponents. If the puck is next touched by an opponent other than the goalkeeper, it results in a penalty against the defensive team.

 Axel

An axel is also a move in figure skating. Though it is often confused with the common word axle, an axel in figure skating refers to a jump performed by a skater leaping from the front outer edge of one skate into the air to make one and a half rotations of the body and landing on the back outer edge of the other skate. The move was popularized by Norwegian figure skater Axel Paulsen. When an additional full rotation is added to the jump, it becomes a double axel; two full rotations, a triple axel, and so on.