The Whole (Full) Nine Nines (Origin)
What Is the Origin of the Saying "The Whole (Full) Nine Nines"?The ammunition belt for the Supermarine Spitfire was nine yards in length. Therefore, a pilot who stated that he had given the enemy aircraft the whole nine yards was claiming that he had fired every single round at his adversary. Going the whole/full nine yards came to mean doing as much as possible.
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