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Homeland Security

1 British  

noun

  1. the United States Department of Homeland Security, the body responsible for dealing with terrorist threats on American soil

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

homeland security 2 British  

noun

  1. precautions taken by the government of a specified country against terrorist attacks

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Four federal air marshals with the Department of Homeland Security, who were working a security assignment nearby, witnessed the confrontation and rushed in to assist, according to police.

From Los Angeles Times • Apr. 18, 2026

Plus, it could finally force Homeland Security to change its ways, no longer insisting that its agents remain masked and unidentifiable.

From Slate • Apr. 17, 2026

The acting director of Immigration and Customs Enforcement, the agency central to the Trump administration’s migration crackdown, is set to leave the department in May, Department of Homeland Security Secretary Markwayne Mullin said.

From The Wall Street Journal • Apr. 17, 2026

The Department of Homeland Security, which includes Border Patrol and Immigration and Customs Enforcement, did not respond to repeated requests for comment on the arrests and declined to answer detailed questions from ProPublica and FRONTLINE.

From Salon • Apr. 15, 2026

Kathy told him about the calls from the missionary and the Homeland Security officials, how they had seen him at Hunt.

From "Zeitoun" by Dave Eggers