Definition

A metal component that seals the back end of a gun barrel, allowing cartridges to be loaded and preventing gases from escaping when fired.

Example

The gunsmith carefully inspected the breechblock for any signs of wear or damage.

Conversation

Have you ever seen the inside of a gun's breechblock?

No, I haven't! What does it look like?

It's a metal part that closes the back of the barrel; pretty interesting stuff!

That sounds cool! I didn't know that much detail about firearms.

Synonyms & Antonyms

Root Explanation

Breechblock → The word is formed from "breech" (from Old English *brēoce*, meaning the hind part or rear) and "block" (from Old French *bloc*, meaning a solid piece of wood or material). A breechblock is a solid piece that closes the rear part of a firearm's chamber.

Memory Tip

Think of the 'hind part' ('breech') being closed off by a 'solid piece' ('block') — that's what a breechblock does.

Visually Confused Words