keister
v.— «The inmates know officials are looking for the phones and are going to great lengths to hide them, he said. It’s tough, officials admit, because some of the phones are small enough to be, in prison parlance, “keistered.”» —“McNeil Island prison searched for illegal phones” by Ian Demsky in McNeill Island Seattle Times (Washington) Nov. 10, 2008. (source: Double-Tongued Dictionary)
Further reading
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