Strongman's deadly weapon, essential for Churchill's preference to war? (7)
I believe the answer is:
jawbone
'war?' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for jawbone that I've seen before include "Samson smote enemies with the . . . . . . . of an ass" , "Mandible" , "Maxilla" , "A new job (anag.)" , "It's hinged to allow the mouth to open" .)