spike someone's guns

English

Etymology

From the wartime practice of welding a metal spike into the touch hole of a cannon (generally done to enemy guns by raiders, or to one's own guns if forced to abandon them in a retreat), making the cannon impossible to fire.

Verb

spike someone's guns (third-person singular simple present spikes someone's guns, present participle spiking someone's guns, simple past and past participle spiked someone's guns)

1. To frustrate a person's efforts or designs; to undercut, to render helpless.
   • 1990, Peter Hopkirk, The Great Game, Folio Society, published 2010, page 205:

     But whatever the Russians may have felt (and, apparently, still do feel) about Shakespear, his superiors were delighted by the way he had so skilfully spiked the Tsar's guns by liberating his subjects.

   • 2005 November 8, John Crace, The Guardian:

     Labour is known to be worried about the Cameron effect and might attempt to spike his guns.