Is “Rhumb” a Scrabble word?
Yes
RHUMB
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 Rhumb
/ɹʌm/
noun
1.A line which crosses successive meridians at a constant angle
2.One of the 32 points of the compass (compass points)
3.A unit of angular measure equal to 1/32 of a circle or 11.25°
Synonyms: loxodrome, rhumb line