IPA: /ˈlɪmɪtə/
KK: /ˈlɪmɪtər/
A device or circuit that restricts the amount or level of something, such as sound or electrical signals, to prevent it from going beyond a certain limit.
The audio engineer used a limiter to ensure the sound levels did not exceed the maximum threshold during the concert.
Limiter → It is formed from "limit" (from Latin "limitem", meaning boundary or border) and "-er" (meaning a person who). A limiter is a person or thing that sets a boundary or limit.
Think of someone who sets a 'boundary' ('limit') — the '-er' indicates that this person is the one doing the limiting.