athlete: starting block
Starting block: device made up of two adjustable pedals that allow sprinters to give themselves momentum during a start.
rack 
Metal bar with notches that is used to adjust the position of the starting blocks.
spike 
Metal piece attached to the front part of the sole to avoid slipping on the track and achieve better thrust.
track shoe 
Shoe with a spiked sole that provides good traction during a race.
block 
Piece on which runners place their feet to give themselves momentum at the start of a race.
number 
Numbered piece of square fabric that athletes wear on their backs and chests for easy identification.
shirt 
Supple, relatively tight-fitting garment covering the athlete’s upper body.