hide box
n.— «During the training sessions, the officers put what’s known as hide boxes—metal containers that hold illegal drugs—inside cars. The dogs are walked around the vehicles. When they sniff out the drugs, they sit down directly beside the area of the vehicle where the narcotics are hidden.» —“Officer, K-9 partner forge close relationship” by Emily Stranger Brunswick News (Georgia) Apr. 26, 2007. (source: Double-Tongued Dictionary)