a thick sequence of sedimentary rock (generally, but not always, red) deposited in Britain and NW Europe during the Devonian period
(in Britain) another term for Devonian
noun 1. .
noun 1. a river bed left dry because the river has changed its course.
noun 1. rose color with a purplish or grayish cast. noun 1.
noun 1. Russian as used in documents before 1600. Abbreviation: ORuss.