"Vaulty" is a word in ENGLISH

An upward concavity in the under side of a beam, girder, or lintel; also, a slight upward concavity in a …

Hollow and curved or rounded; vaulted; -- said of the interior of a curved surface or line, as of the …

A hollow; an arched vault; a cavity; a recess.

Bowed in the form of an arch; -- called also arched.

Anything regarded as extended over the head, as the arch or concave of the sky, the roof of a house, …

To arch over; to build in a hollow concave form; to make in the form of a cove.

Arched; concave; as, a vaulted roof.