n. In crinoids, same as disk, 5 .n. Same as a cloistered (or cloister) vault.n. An arched roof; a concave roof or roof-like covering; the canopy of heaven.n. In architecture, a continuous arch, or an arched roof, so constructed that the stones, bricks, or other materials of which it is composed mutually sustain themselves in their places upon their abutments, and that their joints radiate from some central point or line (or points or lines).n. An arched apartment or compartment; also, a chamber or compartment, even if not arched or vaulted; especially, a subterranean chamber used for certain specific purposes.n. A place of confinement; a prison.n. A place for storing articles; a cellar: as, wine-vaults; the name is hence frequently given, in the plural, to a place where beer and wine are sold, whether subterranean or not.n. A privy.n. In anatomy, a part forming a dome-like roof to a cavityTo form with a vault or arched roof; give the shape or character of an arch or a vault to; arch: as, to vault a passage to a court.To cover with or as with an arch or vault.n. A leap or spring.To leap; bound; spring, especially by having something to rest the hands on, as in mounting a horse or clearing a fence.To exhibit equestrian or other feats of tumbling or leaping.In the manège, to curvet.To leap over; especially, to leap over by aid of the hands or a pole: as, to vault a fence.