- a shaft having one or more cranks, esp the main shaft of an internal-combustion engine to which the connecting rods are attached
WordReference Random House Learner's Dictionary of American English © 2020
- Mechanical Engineering(in an internal-combustion engine) a shaft having one or more cranks.
- Mechanical Engineeringa shaft having one or more cranks, usually formed as integral parts.
- crank1 + shaft 1850–55