lintel

The height of the tablinum at the lintel should be one eighth more than its width.

The height of the lintel should be equivalent to the width of the jambs at the top.

She leaned on the doorway with her forehead against the lintel.

The granite lintel that had crushed the body of the old captains son had fallen also upon the captains heart.

Then, "when I see the—blood—on the—lintel—and on the two—side-posts—I will not go in and—kill the first-born!"