(v. t.) 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.

annex attach beleaguer beset besiege blockade bottle up bound box in box up cage chamber check cloister close in collectivize commandeer communalize communize compass confine confiscate constrain contain coop coop in coop up cordon cordon off cork up corral crib detain distrain encage encircle enclose encompass enshrine expropriate fence in garnish hedge in hem in hold hold in custody hold in restraint house in immure impress imprison incarcerate include inhibit jail keep in keep in custody keep in detention kennel leaguer levy mew mew up nationalize pen pen in pen up pocket pound press quarantine rail in replevin replevy restrain restrict seal up sequester sequestrate shackle shrine shut in shut up socialize stable surround wall in wrap yard yard up