1. A unit of dry measure, especially for grain or coal, equal to about 4 bushels or roughly 140 liters.
Usage: archaic; chiefly British
2. A valley or hollow, especially a narrow wooded valley.
Usage: chiefly British; dialectal

Examples

• The farmer measured the grain in coombs before storing it for winter.
• A coomb of coal was delivered to the house each month.
• The village nestled in a coomb surrounded by ancient trees.
• The old records listed the harvest in coombs and quarters.
• Hikers followed the path down into the green coomb.