vault
     n 1: a burial chamber (usually underground) [syn: {burial vault}]
     2: a strongroom or compartment (often made of steel) for
        safekeeping of valuables [syn: {bank vault}]
     3: an arched brick or stone ceiling or roof
     4: the act of jumping over an obstacle [syn: {hurdle}]
     v 1: jump across or leap over (an obstacle) [syn: {overleap}]
     2: bound vigorously
Source: WordNet® 2.0