Associations to the word «Pitchstone»

Wiktionary

PITCHSTONE, noun. (geology) a natural glass, rich in microscopic crystallites, formed by the rapid cooling of lava or magma

Dictionary definition

PITCHSTONE, noun. Dark acid granitic glass.

Wise words

Words are always getting conventionalized to some secondary meaning. It is one of the works of poetry to take the truants in custody and bring them back to their right senses.
William Butler Yeats