#1
impound v. [
attach, sequester, confiscate, seize] take temporary possession of as a security, by legal authority; "The FBI seized the drugs"; "The customs agents impounded the illegal shipment"; "The police confiscated the stolen artwork"
. wn #2
impound v. [
pound] place or shut up in a pound; "pound the cows so they don't stray"
. wn