impound

from The American Heritage® Dictionary of the English Language, 5th Edition.

• transitive verb To confine in or as if in a pound.
• transitive verb To place (something) in legal custody until a dispute involving it is decided.
• transitive verb To set aside in a fund rather than spend as prescribed.
• transitive verb To accumulate and store in a reservoir.
• noun A place where impounded property is stored, as a lot for keeping vehicles that have been towed by police order.
• noun The process or activity of impounding something.

from The Century Dictionary.

• To put, shut, or confine in or as in a pound or close pen; restrain within bounds; confine: as, to impound stray horses, cattle, etc.
• To take and retain possession of, as a forged document produced as evidence in a trial and directed to be held in custody of the law, in order that a prosecution may be instituted in respect of it.
• To gather and retain (water) in a reservoir, basin, or pond.

from the GNU version of the Collaborative International Dictionary of English.

• transitive verb 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

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• verb transitive To shut up or place in an enclosure called a pound.
• verb transitive, law To hold in the custody of a court or its delegate.
• verb transitive, law, banking To collect and hold (funds) for payment of property taxes and insurance on property in which one has a security interest.
• noun A place in which things are impounded.
• noun A state of being impounded.
• noun That which has been impounded.
• noun law, banking Amounts collected from a debtor and held by one with a security interest in property for payment of property taxes and insurance.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• verb place or shut up in a pound
• verb take temporary possession of as a security, by legal authority