IPA: /ɪmˈpaʊnd/
KK: /ɪmˈpaʊnd/
To take and keep something in a controlled area, often by legal authority, such as animals or property.
The authorities decided to impound the vehicles that were parked illegally.
Past: impounded
Past Participle: impounded
Impound is formed from "in-" (meaning in or into) and "pondere" (meaning to weigh). The word originally referred to the act of weighing something down or holding it in, which evolved to mean holding something in custody, especially in a legal context.
Think of something being held 'in' ('in-') and 'weighed down' ('pondere') — that's why impound means to hold something in custody.