Is “Vault” a Scrabble word?
Yes
VAULT
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 Vault
noun
1.An arched masonry structure supporting and forming a ceiling, whether freestanding or forming part of a larger building.
2.Any arched ceiling or roof.
3.Anything resembling such a downward-facing concave structure, particularly the sky and caves.
Synonyms: vaulting table
verb
1.To build as, or cover with a vault.