jamb.

A vertical side of a doorway, window, or similar opening.

Use it for

Words that belong together

• door jamb
• window jamb
• stone jamb

On the page

He leaned against the door jamb without entering.

Old hinge holes scarred the wooden jamb.

The cracked stone jamb had been patched with a visibly darker mortar.

Usage notes

Primary category: architecture. One of the sides, not the horizontal top or bottom; often part of a surrounding frame. Count noun: jambs.