Rowley rag

noun

noun

Etymology From the names of Rowley Regis, Rowley Hills + rag.

Geography, Geology, Natural sciences A hard basaltic rock found in the Rowley Hills, near Birmingham, formerly used in paving and construction.

Rowley-Rag appeared to be the same thing as basalt and toadstone resembled some species of lava.2004, Robert E Schofield, The Enlightened Joseph Priestley, Pennsylvania State University, published 2004, page 162:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.