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English definition of “cannon”

cannon

noun [C] uk   /ˈkæn.ən/ (plural cannon or cannons) us  
a large, powerful gun, usually attached to two or four wheels, that was used in the past to fire heavy stone or metal balls a gun fastened to an aircraft

cannon

verb [I usually + adv/prep] uk   /ˈkæn.ən/ UK us  
to knock or hit against someone or something suddenly and forcefully as you are running: I was rushing along with my head down when I cannoned into an old lady walking the other way.
(Definition of cannon from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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