Serrous

The silhouetted treeline gave the horizon a serrous appearance.

if while they hum we lay our finger on the back or other parts, for thereupon will be felt a serrous or jarring motion, like that which happeneth while we blow on the teeth of a comb through paper

Now bending, rising, rolling to the blast, Now serrous rustling to th' inconstant breeze...

The central and convex part had subsided some four hundred feet, forming a vast concave, and leaving a high, serrous, black ledge around the circumference of the crater.

The thunder cannons loudly roared, And lightning lanced like pain, But staunch they stood, in serrous file; I saw no more for rain.

A serrous bract subtends each floral bud. Occasionally a bracteole is also present.

The asphalt was serrous, littered with glass.