Is “Biplane” a Scrabble word?
Yes
BIPLANE
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 Biplane
noun
1.An airplane that has two main wings, one above the other and supported by struts
adjective
1.Having, or consisting of, two superposed planes, aerocurves, etc.
“a biplane rudder”