IPA: /ˈvɔːltər/
KK: /ˈvɔltər/
A person who jumps over something, especially using a pole in sports.
The vaulter cleared the bar with ease during the competition.
Vaulter → It is formed from "vault" (from Old French *valter*, meaning to leap or jump) and "-er" (meaning a person who). A vaulter is a person who leaps or jumps, particularly in a sport context.
Think of someone who 'jumps' ('vault') — the '-er' indicates that this person is doing the action. A vaulter is someone who leaps.