Is “Thunderbox” a Scrabble word?
Yes
THUNDERBOX
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 Thunderbox
noun
1.A close-stool, a stool enclosing a chamber pot.
2.An outhouse or latrine: a rudimentary outdoor toilet.
3.A box of metal balls used to create a thunder sound effect.
Synonyms: commode