Noun

• S: (n) vault, burial vault (a burial chamber (usually underground))
• S: (n) vault, bank vault (a strongroom or compartment (often made of steel) for safekeeping of valuables)
• S: (n) vault (an arched brick or stone ceiling or roof)
• S: (n) vault, hurdle (the act of jumping over an obstacle)

Verb

• S: (v) vault, overleap (jump across or leap over (an obstacle))
• S: (v) vault (bound vigorously)