astrăgălus, i, m., = ἀστράγαλος (the ankle-bone).
I In arch.
A A little round moulding in the form of a ring , which encircles the upper part of a column , an astragal , Vitr. 3, 3.—
B Lesbius, a sort of moulding carved to represent a string of pearls , a festoon , a stem with seeds of grain or olives , Vitr. 4, 6.—
II A leguminous plant , Spanish tragacanth : Astragalus Baeticus, Linn.; Plin. 26, 8, 29, § 46.