To shut up or place in an inclosure called a pound; hence, to hold in the custody of a court; as, to impound stray cattle; to impound a document for safe keeping.
- To confine in or as if in a pound: capture and impound stray dogs.
- To seize and retain in legal custody: impounding disputed electoral ballots.
- To set aside in a fund rather than spend as prescribed: a governor who impounded monies designated for use by cities.
- To accumulate and store in a reservoir: By damming the stream, the engineers impounded its waters for irrigation.