DICT.TW Dictionary Taiwan

 as·tra·gal /ˈæstrɪgəl/
 圓圈

 As·tra·gal 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.
 ◄ ►

 astragal
      n 1: the bone in the ankle that articulates with the leg bones to
           form the ankle joint [syn: anklebone, astragalus, talus]
      2: a beaded molding for edging or decorating furniture [syn: beading,
          bead, beadwork]