noun
architrave
AR-kih-trayv/ˈɑːrkɪtreɪv/
Molding around a door, window, or other opening.
The wooden architrave frames the doorway with continuous stepped molding.

Etymology
The 'beam' element points to the original feature resting directly on columns and supporting the structure above. The name later extended to the molded frame around a window or doorway.
In context
the architrave set in a bit which is on that line but I made it just a bit wider and I have more than I needed for this door frame
More examples
- White paint highlights the window's architrave.
- The house retains its original wooden architraves.
- She measures the opening before cutting the architrave.
Forms
architrave · architraves
Similar words
- casing
- A common term for trim surrounding a door or window.
- molding
- A broader category of shaped decorative strips.