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DOUBLE. Twofold; as, double cost; double insurance; double plea.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.
References in periodicals archive ?
NO ENTRY An officer at the boarded up home of Sergei Skripal, above, where it's believed the double agent and his daughter Yulia, main pic, could have come into contact with the Novichok nerve agent on a door
Former double agent Mr Skripal, 66, and his 33-year-old daughter remain in a critical but stable condition in hospital after they were found collapsed in the centre of Salisbury, in Wiltshire, on March 4.
It was not reported how the double agent was apprehended.
Johnny Jebsen, the Abwehr handler for Agent Tricycle, Dusko Popov, was an Allied sympathizer who knew that Popov was a double agent and had surmised the extent of the Double Cross system.
He was double agent of US and Al-Qaeda and he was also wanted by our intelligence agencies.
Deceiving Hitler: Double Cross and Deception in World War II, by Kent author Terry Crowdy, looks at how Owens helped to fool Hitler and the Germans after becoming a double agent for the German Abwehr and Britain's Security Service MI5 in the 1930s.
After rigorous training in France, Chapman parachuted into the English countryside on his first mission and promptly offered himself up to MI5 as a double agent. Codenamed Zigzag, he traveled throughout occupied Europe, gathering intelligence for the Allies.
The second Welsh double agent was Gwilym Williams, a police inspector who retired from the force early after falling out with his boss.
Summary: It has been claimed the double agent who foiled an al-Qaeda underwear bomb plot was a British citizen.
Yemen: Man ordered by Al-Qaeda s branch in Yemen to blow up a US-bound airliner was a double agent who infiltrated the group and volunteered for the suicide attack, with Saudi intelligence likely playing a key role, US media reported Tuesday.
Double Agent: The Eddie Chapman Story Tuesday, BBC 2, 11.20pm Eddie Chapman was an ex-Coldstream Guard who turned to crime to fund a lavish lifestyle.