Is “Flashbulb” a Scrabble word?
Yes
FLASHBULB
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 Flashbulb
/ˈflæʃbʌlb/
noun
1.A glass bulb that made a single bright flash for illumination during a photograph.