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Homeland Security

¹ British

noun

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

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.

Last week, the Senate finally settled on a plan to end the Department of Homeland Security shutdown.

From Slate • Apr. 4, 2026

The BBC has asked the US Department of Homeland Security for comment.

From BBC • Apr. 3, 2026

Congress returns from a break the week of April 13 and will begin debating the budget even as lawmakers are fighting over the current year’s Department of Homeland Security funds.

From MarketWatch • Apr. 3, 2026

TMZ is turning its celebrity lens on Congress, tracking lawmakers on recess as a nearly six-week Department of Homeland Security shutdown drags on.

From Los Angeles Times • Apr. 1, 2026

It was not the Department of Labor on the phone, he said, but the Department of Homeland Security, pretending to be the Department of Labor.

From "Educated" by Tara Westover

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023