Emily Dickinson Lexicon

VAULT, n. [Fr. voûte; It. volta, a vault; volto, the face, a visage, and a vault, L. vultus; a derivative of L. volvo, volutus; Sp. voltear, to turn, to tumble.]

1. A continued arch, or an arched roof. Vaults are of various kinds, circular, elliptical, single, double, cross, diagonal, Gothic, &c. – Cyc.
2. A cellar. To banish rats that haunt our vault. – Swift.
3. A cave or cavern. The silent vaults of death, unknown to light. – Sandy.
4. A repository for the dead. – Shak.
5. In the manege, the leap of a horse.