from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A dark shaly limestone occurring in the Carboniferous limestone of Ireland.
from The Century Dictionary and Cyclopedia
- n. The local Irish designation of certain beds of shales, sandstones, and clays, containing thin, unworkable seams of coal. The calp belongs to the Lower Carboniferous series. See culm.
Sorry, no etymologies found.