"vault" in the noun sense
1. vault, burial vault
a burial chamber (usually underground)
2. vault, bank vault
a strongroom or compartment (often made of steel) for safekeeping of valuables
an arched brick or stone ceiling or roof
4. vault, hurdle
the act of jumping over an obstacle
"vault" in the verb sense
1. vault, overleap
jump across or leap over (an obstacle)
Source: WordNet® (An amazing lexical database of English)
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