Is “Coomb” a Scrabble word?
Yes
COOMB
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Coomb
/kuːm/
noun
1.An old English measure of corn (e.g., wheat), equal to half a quarter or 4 bushels.