Is “Chalumeau” a Scrabble word?
Yes
CHALUMEAU
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 Chalumeau
/ˌʃælʊˈməʊ/
noun
1.A woodwind instrument which was the predecessor of the clarinet.
2.The lowest range of the clarinet, reaching up to written B♭ (B flat) above middle C.