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To point the muzzle of artillery weaponry either to increase their range or to make a nearby area safe for infantry. The sergeant gave orders to lift fire so our troops could infiltrate the building.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
To increase the range of artillery fire by elevating the muzzle of a piece.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.