a person who is presently using a gun to shoot people in a confined and populated area.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use active shooter in a sentence
In the meantime, communities continue to face down active shooters while waiting hours or days for troopers to arrive.Citizens Hide From Active Shooters as Alaska Is Slow to Deliver on 2019 Promise of Village Troopers | by Kyle Hopkins, Anchorage Daily News | December 13, 2021 | ProPublica
In the initial moments, people feared an active shooter was among them.A girl’s reaction to the Nationals Park shooting made the world look at D.C.’s gun violence problem | Theresa Vargas | July 21, 2021 | Washington Post
As part of their training, the security companies are primed on how to deal with all kinds of situations including responding to an active shooter.As NYC Pride nears, ban on police seen as support for trans, BIPOC attendees | Prince Chingarande | June 15, 2021 | Washington Blade
“We practice what we call active shooter response,” he said.Ray Kelly: New York Is Prepared for a Nairobi-Style Mall Attack | Eli Lake | October 10, 2013 | THE DAILY BEAST
“These are what we call ‘active shooter’ situations,” Billy said.