Bicycle

   Used in the cycling section of the sport.

   Bike rack

   The device that holds bicycles in an upright position in the transition area.

   Botton bracket

   A hole in the base of a bicycle frame where the axle unit is attached.

   Chainring

   A large toothed ring within the chainset of a bicycle that drives the chain via the pedals and cranks.

   Chainset

   The chainwheels, chain and rear sprocket, as one, on a bicycle.

   Crank

   An arm, bolted to the crankshaft, which drives the chainwheels on a bicycle.

   Crankshaft

   The axle to which the cranks are attached on a bicycle.

   Derailleur

   The mechanism which moves the chain from one chainring or sprocket to another on a bicycle.

   Goggles

   Enclosed eyewear which prevent water from getting into a swimmer's eyes.

   Nose clip

   A clip which prevents water from getting into a swimmer's nose.

   Pontoon

   The floating apparatus from which triathletes dive to start the swimming leg.

   Shoes

   Sprocket

   1. one of a series of teeth or projections on a wheel for transmitting or receiving motion to or from a corresponding tooth or part on a bicycle; also called a "cog".

   2. a sprocket wheel; also called a "cogwheel".

   Sprocket wheel

   A wheel with sprockets; also called a "cogwheel".

   Swim buoy

   A marker used as a turning point in the swimming course.

   Swimming cap

   A lightweight, head-hugging and flexible cap which holds the hair in place and reduces resistance when swimming.

   Wetsuit

   A tight-fitting rubber suit worn to keep a swimmer warm and increase buoyancy.

Credit: IOC

For further info., please visit http://www.olympic.org/uk/sports/programme/disciplines_uk.asp?DiscCode=TR.