asbestŏs, i, m. (sc. lapis), = ἄσβεστος (incombustible),
a stone of an iron-gray color , found in Arcadia , differing from the common asbestos , perh. amiantus, Plin. 37, 10, 54, § 146.
·noun A variety of amphibole or of pyroxene, occurring in long and delicate fibers, or in fibrous ma...
Webster's Dictionary of the English Language