manual transmission
nounUK /ˈmæn.ju.əl trænzˈmɪʃ.ən/
US /ˈmæn.ju.əl trænsˈmɪʃ.ən/
A car part that you change by hand to make the car go faster or slower.
My dad's old truck has a manual transmission, so he moves a stick to change gears.
OTHER MEANINGS
2. The act of passing information between people by hand rather than by machine.
The office used manual transmission of files between departments.
3. A system in which a person operates a machine's gears directly instead of a computer doing it.
The race car uses a manual transmission for better control.
4. A type of bicycle gearing where the rider shifts gears with a lever or twist grip.
This mountain bike has a manual transmission with twenty-one speeds.