Definition

A part of an engine that helps control the timing of the engine's valves by rotating and pushing against them.

Example

The mechanic replaced the worn camshaft to improve the engine's performance.

Conversation

Have you ever heard of a camshaft in engines?

Yeah, I think it's important for how they work, right?

Exactly! It helps control the opening and closing of the engine valves.

That’s pretty cool; I didn’t know it played such a crucial role.

Synonyms & Antonyms

Root Explanation

Camshaft → The word is formed from "cam" (from Middle English *cam*, meaning a rotating or sliding piece in machinery) and "shaft" (from Old English *sceaft*, meaning a long, narrow part or rod). A camshaft is a rod that has rotating pieces that control the timing of engine valves.

Memory Tip

Think of a 'shaft' as a long rod that has 'cams' — rotating pieces that help control the engine's valves.

Visually Confused Words