crank
🇺🇸
/kræŋk/
🇬🇧
/kræŋk/
someone with unusual ideas that others may not agree with
The meeting was disrupted by a crank who insisted on discussing conspiracy theories.
someone who gets upset easily
Don't be such a crank; it's just a minor inconvenience.
a part of a machine that you turn to make it work
The old car wouldn't start until he turned the crank several times.
to turn a crank to make something work
He had to crank the engine manually to get the vintage motorcycle running.