† ˈphassachateObs. [ad.mod.L. phassachātēs, f.Gr. ϕάσσα ring-dove, cushat + ἀχάτης agate.] The lead-coloured agate. [1753Chambers Cycl. Supp., Phassachates, in the natural history of the antients, the name of a species of agate.]1828Webster, Phassachate. Hence in mod. Dicts.