To treat with ozone.
An allotrope of oxygen (symbol O₃) having three atoms in the molecule instead of the usual two; it is a toxic gas, generated from oxygen by electrical discharge.
Hypernym: greenhouse gas
Fresh air, especially that breathed at the seaside and smelling of seaweed.
To breathe hard, as when nearly suffocated.
To utter with breaks and interruption, in the manner of a person half suffocated.
To have the throat obstructed so as to be in danger of suffocation; to choke; to suffocate.
To control or adjust the speed of (an engine).
To cut back on the speed of (an engine, person, organization, network connection, etc.).
To strangle or choke someone.
A valve that regulates the supply of fuel-air mixture to an internal combustion engine and thus controls its speed; a similar valve that controls the air supply to an engine.
The lever or pedal that controls this valve.