the rate at which someone or something moves or operates or is able to move or operate
we turned on to the runway and began to gather speed
an engine running at full speed
the car has a top speed of 147 mph
each of the possible gear ratios of a bicycle or motor vehicle.
the light-gathering power or f-number of a camera lens.
an amphetamine drug, especially methamphetamine.
wish me good speed
I got into the car and home we sped
make prosperous or successful
may God speed you
take or be under the influence of an amphetamine drug
more kids than ever are speeding, tripping, and getting stoned