Crankshaft

/ˈkraŋkʃæft/

Meaning & Definition

noun

A shaft with a crank or cranks, used to convert linear motion into rotational motion, typically part of an engine or machine.

The mechanic replaced the worn-out crankshaft to restore the car's engine performance.

The part of an internal combustion engine that converts the linear motion of the pistons into rotational motion.

A damaged crankshaft can lead to severe engine problems and costly repairs.

A cylindrical rod that rotates to enable the conversion of energy from a piston.

To improve efficiency, engineers are designing a more durable crankshaft for the new model.

Derived from the combination of 'crank' and 'shaft', where 'crank' refers to the bent arm or lever that changes direction of force.

crank up

To increase the power or intensity of something.

turning the crank

To engage in repetitive, often tedious work.

piston

A sliding piece that moves within a cylinder.

engine

A machine designed to convert one form of energy into mechanical energy.

To crank it up.

We need to crank it up to increase the power output.

Cranky crankshaft.

Something's wrong with the engine; it feels like a cranky crankshaft.