noun

1. an arched roof, ceiling, or covering of masonry
2. an arched chamber or space, esp. when underground
3. a cellar room used for storage, as of wine
4. 1. a burial chamber
   2. a concrete or metal enclosure in the ground, into which the casket is lowered at burial
5. ☆ a secure room, often with individual safe-deposit boxes, for the safekeeping of valuables or money, as in a bank
6. an underground cave with a naturally arched roof
7. the sky as a vaultlike canopy
8. Anat. any arched cavity or structure the cranial vault

Etymology: ME voute < OFr < VL *volvita, an arch, vault < *volvitus, pp. of *volvitare, intens. of L volvere, to turn around, roll: see walk

transitive verb

1. to make a vault over; cover with a vault
2. to build in the form of a vault

intransitive verb