'Cumbrian system' definitions:

Definition of 'Cumbrian system'

From: GCIDE

Cumbrian \Cum"bri*an\ (k?m"br?-an), a. Pertaining to Cumberland, England, or to a system of rocks found there. [1913 Webster]
Cumbrian system (Geol.), the slate or graywacke system of rocks, now included in the Cambrian or Silurian system; -- so called because most prominent at Cumberland. [1913 Webster]