weapon of last resort

noun phrase

Definition of weapon of last resort

: a weapon that is only used if its use cannot be avoided see pesticides as the weapon of last resort against garden pests

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“Weapon of last resort.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/weapon%20of%20last%20resort. Accessed 27 Jan. 2021.

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