1) German intelligence agency 
The Abwehr was a German military intelligence (information gathering) organization from 1921 to 1944. The term Abwehr (ˈapveːɐ̯, German for defence) was used as a concession to Allied demands that Germany`s post–World War I intelligence activities be for `defensive` purposes only. After 4 February 1938, its name in title was Foreign Affai......
defense; as a shortening of Spionage Abwehr (spy defense) the term referred to the counter-espionage service (German Secret Service) of the German High Command, headed by Admiral Canaris. Also an element in such compounds as Flugzeugabwehr Kanone "anti-aircraft gun."
Intelligence and counterespionage service of the German High Command 1933-45. It was commanded by Admiral Canaris 1935-44, when its duties were taken over by the 
Intelligence services of the Wehrmacht. Most of their activities were gradually taken over by the SS, being absorbed by it in 1944.
('defence') German military intelligence and counter-intelligence organisation
The Abwehr were the German Intelligence Service during the Second World War.
defense; as a shortening of Spionage Abwehr (spy defense) the term referred to the counter-espionage service (German Secret Service) of the German High Command, headed by Admiral Canaris.
Intelligence service for the German Armed Forces - run by Admiral Canaris 
the German high-command service for espionage, counterintelligence, and sabotage during World War II.