casement.

A window or framed window section hinged at the side to open like a door.

Use it for

Words that belong together

• open casement
• casement window
• timber casements

On the page

She pushed the casement outward to hear the street musicians.

Wind rattled the latch of the bedroom casement.

The new casements opened fully, unlike the old sliding windows.

Usage notes

Primary category: architecture. Contrast with a sliding sash; casement names the hinged frame as well as the window type. Count noun: casements.