To shut up stray animals or distrained goods in a pound. Thomas v.Harries, 1 Man. & G. 703; Goodsell v. Dunning, 34 Conn. 257; Howard v. Bartlett, 70 Vt.314. 40 Atl. 825. To take into the custody of the law or of a court. Thus, a court will sometimes impounda suspicious document produced at a trial.