Definition

A type of shaft that moves back and forth on its supports instead of turning around like a wheel.

Example

The engineer explained how the rockshaft works in the machine.

Conversation

Have you ever seen how a rockshaft works in a machine?

No, I haven't. What does it do?

It oscillates to transfer motion without actually revolving.

That sounds interesting! I’d love to learn more about it.

Synonyms & Antonyms

Root Explanation

Rockshaft → The word is formed from "rock" (from Old English *rocc*, meaning a solid mineral material) and "shaft" (from Old English *sceaft*, meaning a long, narrow part or handle). The term "rockshaft" refers to a shaft or rod made of rock or a similar solid material.

Memory Tip

Think of a solid material ('rock') combined with a long, narrow part ('shaft') — this helps you remember that a rockshaft is a solid rod or handle made from rock.

Visually Confused Words