D defs.my
Entry 1 sense Webster, 1913

Impound

/ĭmˌ-pound'/ · Im·pound · IPA /ɪmˈpaʊ̯nd/
01 v. t. To shut up or place in an inclosure called a pound; hence, to hold in the custody of some authority such as police or a court; as, to impou…
imp. & p. p. Impounded; p. pr. & vb. n. Impounding
  1. 1.
    To shut up or place in an inclosure called a pound; hence, to hold in the custody of some authority such as police or a court; as, to impound stray cattle; to impound an illegally parked car; to impound a document for safe keeping.
    “But taken and impounded as a stray, The king of Scots.” Shak.