Astragal

n.	1.	(Arch.) A convex molding of rounded surface, generally from half to three quarters of a circle.
	2.	(Gun.) A round molding encircling a cannon near the mouth.

Noun	1.	astragal - the bone in the ankle that articulates with the leg bones to form the ankle joint Synonyms: anklebone, astragalus, talus
	2.	astragal - a beaded molding for edging or decorating furniture Synonyms: beading, beadwork, bead

ankle, ankle joint, anklebone, articulatio talocruralis, astragalus, bone, mortise joint, os, talus