Oxford Advanced American Dictionary

Definition of vaulted adjective from the Oxford Advanced Learner's Dictionary

vaulted

adjective
vaulted pronunciation English ˈvɔːltɪd vaulted pronunciation American ˈvɔːltɪd
(architecture)
 
made in the shape of an arch or a series of arches; having a ceiling or roof of this shape
a vaulted ceiling/cellar