main coal
Coal Mining
noun
1A main or principal seam of coal.
2Coal extracted from a main seam, of recognized good quality.
Origin
Early 18th century. Compare main.
- law of octaves
- law of segregation
- law of succession
- law of the Medes and Persians
- law (or principle) of the excluded middle
- Lawrence, D. H.
- Lawrence, Ernest Orlando
- Lawrence, Jacob
- Lawrence, Sir Thomas
- Lawrence, St
- Lawrence, T. E.
- lawrencium
- Lawrentian
- law school
- Law, Sir Denis
- Law Society
- laws of war
- Lawson's cypress
- law student
- lawsuit
- law term
- Lawton
- lawyer
- lawyer cane
- lawyerly