pomphŏlyx, ygis, f., = πομφόλυξ,
a substance deposited from the smoke of smelting-furnaces , pompholyx , Plin. 34, 13, 33, § 128.
·noun Impure zinc oxide. II. Pompholyx ·noun A skin disease in which there is an eruption of bullae...
Webster's Dictionary of the English Language