camshaft
/ˈkæmʃæft/Definitions
1. noun
A rod with reciprocating pistons or a sliding piece that operates a valve or other mechanism, typically in an internal combustion engine.
“The engine’s camshaft was damaged during the accident.”
2. noun
A rod with a series of lobes or projections that operate valves or other mechanisms in an internal combustion engine.
“The car’s camshaft was designed for high-performance.”
3. noun
A shaft that carries a cam or other mechanism in a machine or engine.
“The camshaft was replaced with a new one to improve efficiency.”