GABBRO

gabbro

(noun) one of a family of granular intrusive rocks

Source: WordNet® 3.1

Etymology

Noun

gabbro (countable and uncountable, plural gabbros)

(rock) Originally, a kind of serpentine; now generally a coarsely crystalline, igneous rock consisting of lamellar pyroxene and labradorite.

Source: Wiktionary

Gab"bro, n. Etym: [It.] (Geol.)

Definition: A name originally given by the Italians to a kind of serpentine, later to the rock called euphotide, and now generally used for a coarsely crystalline, igneous rock consisting of lamellar pyroxene (diallage) and labradorite, with sometimes chrysolite (olivine gabbro).

Source: Webster’s Unabridged Dictionary 1913 Edition