Definition

A horizontal beam that supports the rafters in a roof structure.

Example

The builders installed a purlin to provide extra support for the roof.

Conversation

Have you ever heard of a purlin in construction?

Yeah, I think it's one of those beams that support the roof.

Exactly! It's a horizontal piece that helps hold everything up.

Right, it’s important for keeping the structure stable.

Synonyms & Antonyms

Root Explanation

The word 'purlin' originates from Middle English 'perlin', which is derived from Old French 'perlin', meaning a small beam or rafter. It refers specifically to a horizontal beam that supports the roof structure in a building.

Memory Tip

Think of a small beam ('perlin') that supports the roof — that's what a purlin does.

Visually Confused Words