last-ditch defense

last-ditch defense

A final, desperate effort to save or protect something or to avoid failure or defeat. The soldiers are preparing for a last-ditch defense against the enemy troops. The senator made an impassioned plea on national television last night as a last-ditch defense of the controversial legislation. The experimental high-energy laser weapon could serve as last-ditch defenses against missiles and enemy aircraft.
See also: defense
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

last-ditch defense/effort

A desperate final measure. In military terminology of the seventeenth century the “last ditch” was the ultimate line of defense. By the eighteenth century the term was being used figuratively, as in Thomas Jefferson’s description, “A government driven to the last ditch by the universal call for liberty.”
See also: defense, effort
The Dictionary of Clichés by Christine Ammer Copyright © 2013 by Christine Ammer