How to sign: a pedal that controls the throttle valve
"he stepped on the gas";
Similiar / Same: accelerator pedal, gas pedal, throttle, gas, gun
Categories: foot lever, foot pedal, pedal, treadle
How to sign: a scientific instrument that increases the kinetic energy of charged particles
Similiar / Same: particle accelerator, atom smasher
Categories: scientific instrument
Within this category: betatron, charge-exchange accelerator, Cockcroft and Walton accelerator, collider, cyclotron, linear accelerator