Definition of the Department of Homeland Security from the Oxford Advanced Learner's Dictionary

 

the Department of Homeland Security

 
BrE
 
; NAmE
 
(abbreviation DHS)
 
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the US government department created in 2002 to protect the country from terrorist attack. The department provides advice on security to the government and to private companies, and prepares for emergency situations. It also includes border control and immigration services, the United States Coast Guard and the Secret Service.