a. [f. L. Trīnacria Sicily, a. Gr. Tpivaxpia, taken as f. τρι-, TRI- + ἄκρα point, cape; but orig. θρῑνακίη, f. θρῖναξ trident.] Of Sicily, Sicilian; hence, three-pointed.
1640. Howell, Dodona’s Gr. (1645), 49. The Trinacrian Vespers, and Bartholomean Massacre, were nothing to this.
1667. Milton, P. L., II. 661. Vex’d Scylla bathing in the Sea that parts Calabria from the hoarce Trinacrian shore.
1871. Ruskin, Fors Clav., x. (1896), I. 201. Only the Trinacrian legs of [the Isle of] Man.
So Trinacrite Min., a brown variety of PALAGONITE. (Now considered as a rock.)
1854. Dana, Min. (ed. 4), II. 166. Trinacrite … is dull brown and cleavable or micaceous, and is mixed with … Siderosilicite.
1868. Watts, Dict. Chem., V. 240. Siderosilicite, a mineral forming, together with trinacrite, a brown mass on the tufa … at Cape Passaro, the southernmost point of Sicily.
