Cambrian

1. n. The Cambrian formation.
2. a. Of or pertaining to Cambria or Wales.
3. a. Of or pertaining to the lowest subdivision of the rocks of the Silurian or Molluscan age; — sometimes described as inferior to the Silurian. It is named from its development in Cambria or Wales. See the Diagram under Geology.
4. n. A native of Cambria or Wales.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.