coomb noun¹. [ku:m] Also comb.
[Old English cumb prob. identical with older Low German kumb, High German kump(f), mod. Low German, High German kumm, mod. German Kumme.]
1. A vessel, a cup. Only in OE.

2. A brewing tub or vat. LME-M19.

3. A dry unit of capacity equal to four bushels. LME.

[TahlilGaran] English Dictionary ▲

coomb noun². [ku:m] Also comb, combe, coombe.
[Old English cum(b) from British: cf. CWM.]
A deep hollow or valley, esp. on the side of a hill; a valley running up from the sea.

► Not found in Old English or Middle English literature, but occurring from early times in charters in place-names belonging to the south of England, many of which survive, e.g. Batscombe, Southcombe. Its present general use goes back to L16.

[TahlilGaran] English Dictionary ▲