doughnut
 n.— «According to court documents, some of the iodine was smuggled over the border and driven to Escondido inside car tires that were referred to as “doughnuts” by members of the organization.» —“Five from Escondido among those named” by J. Harry Jones San Diego Union-Tribune (California) Nov. 14, 2004. (source: Double-Tongued Dictionary)