1. (

• impound ,
• 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" ;

2. (

• impound ,
• pound ,

) place or shut up in a pound; "pound the cows so they don't stray" ;