weapon of last resort
noun phrase
: a weapon that is only used if its use cannot be avoided
see pesticides as the weapon of last resort against garden pests
Cite this Entry
“Weapon of last resort.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/weapon%20of%20last%20resort. Accessed 30 Oct. 2025.
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Merriam-Webster unabridged
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