Definition & Meaning of "window jamb"

What is a "window jamb"?

A window jamb is the vertical part of a window frame that runs along the sides of the window opening. It supports the window and holds it in place, ensuring it opens and closes smoothly. Window jambs are typically made from materials like wood, vinyl, or metal, depending on the window's design. They also play a role in sealing the window, helping to keep out drafts and weather elements. The jambs work together with other parts of the frame to provide stability and ensure that the window functions properly while contributing to the window's overall appearance.