Definition

A type of fastener that has a wing-like shape, allowing it to be easily tightened or loosened by hand.

Example

He used a thumbnut to secure the metal plate in place without needing any tools.

Conversation

Have you ever heard of a thumbnut?

No, I haven't! What is it?

It's a type of fastener, kind of like a wing nut.

That sounds interesting! I'll have to look it up.

Synonyms & Antonyms

Root Explanation

The word 'thumbnut' is formed from 'thumb' (from Old English 'þuma', meaning the short, thick digit on the hand) and 'nut' (from Old English 'cyning', meaning a hard-shelled fruit or seed). A thumbnut refers to a type of fastener that can be turned by hand, often resembling a nut that can be gripped by the thumb.

Memory Tip

Think of the 'thumb' as the finger used to grip and 'nut' as a fastener — a thumbnut is something you can easily turn with your thumb.

Visually Confused Words